[docs] Update CONTRIBUTING.md (MystenLabs#16149)

## Description 

Describe the changes or additions included in this PR.

## Test Plan 

How did you test the new or updated feature?

---
If your changes are not user-facing and do not break anything, you can
skip the following section. Otherwise, please briefly describe what has
changed under the Release Notes section.

### Type of Change (Check all that apply)

- [ ] protocol change
- [ ] user-visible impact
- [ ] breaking change for a client SDKs
- [ ] breaking change for FNs (FN binary must upgrade)
- [ ] breaking change for validators or node operators (must upgrade
binaries)
- [ ] breaking change for on-chain data layout
- [ ] necessitate either a data wipe or data migration

### Release notes

---------

Co-authored-by: Markus Legner <[email protected]>

CODE_OF_CONDUCT.MD

@@ -19,7 +19,7 @@ diverse, inclusive, and healthy community.
 
 ## More information
 
-See the central [Sui Code of Conduct](doc/src/contribute/code-of-conduct.md) for
+See the central [Sui Code of Conduct](https://github.com/MystenLabs/sui/blob/main/docs/content/references/contribute/code-of-conduct.mdx) for
 full details.
 
 Our Code of Conduct is adapted from the

CONTRIBUTING.md

@@ -1,9 +1,17 @@
 # Contributors
 
-## How to Contribute
+Thanks for considering making a contribution to the Sui network or its documentation. The Sui monorepo houses the code that powers and documents the Sui blockchain. 
 
-See [Contributing to Sui](doc/src/contribute/index.md) for instructions on helping Sui grow.
+## Contribute to Sui
 
-See [ISSUES.md](./ISSUES.md) for filing bug reports.
+See [Sui Environment Setup](https://github.com/MystenLabs/sui/blob/main/docs/content/guides/developer/getting-started/sui-environment.mdx) for approach to submitting code fixes and enhancements.
 
-See [CONTRIBUTING.md](./crates/sui-framework/CONTRIBUTING.md) for information related to `sui-framework` crate contributions..
+If you want to contribute code that creates a feature on Sui, start with a [Sui Improvement Proposal](https://github.com/sui-foundation/sips/tree/main) before developing the logic.
+
+Found a bug or security vulnerability? Create a [GitHub issue](https://github.com/MystenLabs/sui/issues/new/choose). 
+
+Found a small error or typo in the documentation? Each page on the [sui.docs.io](https://sui.docs.io) site includes an **Edit this page** link at the bottom that you can use to edit the page in GitHub. The content is located in the docs/content directory of the Sui repo, so you can make a usual PR if you prefer. 
+
+For larger documentation issues, you can [create an issue](https://github.com/MystenLabs/sui/issues/new/choose) in GitHub. To fix the problem yourself, follow the [documentation contribution](./docs/content/references/contribute/contribution-process.mdx) guidelines.
+
+Want to contribute to the Sui framework? See [CONTRIBUTING.md](https://github.com/MystenLabs/sui/blob/main/crates/sui-framework/CONTRIBUTING.md) for information related to `sui-framework` crate contributions.

crates/sui-sdk/README.md

@@ -160,18 +160,18 @@ See the programmable transactions [example](https://github.com/MystenLabs/sui/bl
 ### Tic Tac Toe quick start
 
 1. Prepare the environment 
-   1. Install `sui` binary following the [Sui installation](https://github.com/MystenLabs/sui/blob/main/doc/src/build/install.md##install-sui-binaries) docs.
-   1. [Connect to Sui Devnet](https://github.com/MystenLabs/sui/blob/main/doc/src/build/connect-sui-network.md).
-   1. [Make sure you have two addresses with gas](https://github.com/MystenLabs/sui/blob/main/doc/src/build/cli-client.md#add-existing-accounts-to-clientyaml) by using the `new-address` command to create new addresses:
+   1. Install `sui` binary following the [Sui installation](https://github.com/MystenLabs/sui/blob/main/docs/content/guides/developer/getting-started/sui-install.mdx) docs.
+   1. [Connect to Sui Devnet](https://github.com/MystenLabs/sui/blob/main/docs/content/guides/developer/getting-started/connect.mdx).
+   1. [Make sure you have two addresses with gas](https://github.com/MystenLabs/sui/blob/main/docs/content/guides/developer/getting-started/get-address.mdx) by using the `new-address` command to create new addresses:
       ```shell
       sui client new-address ed25519
       ```
       You must specify the key scheme, one of `ed25519` or `secp256k1` or `secp256r1`.
       You can skip this step if you are going to play with a friend. :)
-   1. [Request Sui tokens](https://github.com/MystenLabs/sui/blob/main/doc/src/build/install.md#sui-tokens) for all addresses that will be used to join the game.
+   1. [Request Sui tokens](https://github.com/MystenLabs/sui/blob/main/docs/content/guides/developer/getting-started/get-coins.mdx) for all addresses that will be used to join the game.
 
 2. Publish the move contract
-   1. [Download the Sui source code](https://github.com/MystenLabs/sui/blob/main/doc/src/build/install.md#source-code).
+   1. [Download the Sui source code](https://github.com/MystenLabs/sui/blob/main/docs/content/guides/developer/getting-started/sui-install.mdx).
    1. Publish the [`games` package](https://github.com/MystenLabs/sui/tree/main/sui_programmability/examples/games) 
       using the Sui client:
       ```shell

crates/sui-types/src/README.md

@@ -3,7 +3,7 @@
 Note: this README file currently covers cryptography-related structs and methods.
 
 Currently, three files are equipped with signature and hashing functionality (`crypto.rs`, `signature_seed` and
-`messages.rs`). See [Sui Signatures](../../../doc/src/learn/cryptography/sui-signatures.md) for supported signature schemes and its requirments for user and authority signatures. See [fastcrypto](https://github.com/MystenLabs/fastcrypto) for concrete implementation of various cryptography libraries.
+`messages.rs`). See [Sui Signatures](https://github.com/MystenLabs/sui/blob/main/docs/content/concepts/cryptography/transaction-auth/signatures.mdx) for supported signature schemes and its requirments for user and authority signatures. See [fastcrypto](https://github.com/MystenLabs/fastcrypto) for concrete implementation of various cryptography libraries.
 
 ## Quick links
 

sdk/typescript/README.md

@@ -5,20 +5,20 @@ For more complete docs, visit the [Sui TypeScript SDK docs](https://sdk.mystenla
 # Sui TypeScript SDK
 
 This is the Sui TypeScript SDK built on the Sui
-[JSON RPC API](https://github.com/MystenLabs/sui/blob/main/doc/src/build/json-rpc.md). It provides
-utility classes and functions for applications to sign transactions and interact with the Sui
-network.
+[JSON RPC API](https://github.com/MystenLabs/sui/blob/main/docs/content/references/sui-api.mdx). It
+provides utility classes and functions for applications to sign transactions and interact with the
+Sui network.
 
 WARNING: Note that we are still iterating on the RPC and SDK API before TestNet, therefore please
 expect frequent breaking changes in the short-term. We expect the API to stabilize after the
 upcoming TestNet launch.
 
-## Working with DevNet
+## Working with Devnet
 
 The SDK will be published to [npm registry](https://www.npmjs.com/package/@mysten/sui.js) with the
-same bi-weekly release cycle as the DevNet validators and
-[RPC Server](https://github.com/MystenLabs/sui/blob/main/doc/src/build/json-rpc.md). To use the SDK
-in your project, you can do:
+same bi-weekly release cycle as the Devnet validators and
+[RPC Server](https://github.com/MystenLabs/sui/blob/main/docs/content/references/sui-api.mdx). To
+use the SDK in your project, you can do:
 
 ```bash
 $ npm install @mysten/sui.js
@@ -37,7 +37,8 @@ contain the latest changes from `main`.
 npm install @mysten/sui.js@experimental
 ```
 
-Refer to the [JSON RPC](https://github.com/MystenLabs/sui/blob/main/doc/src/build/json-rpc.md) topic
+Refer to the
+[JSON RPC](https://github.com/MystenLabs/sui/blob/main/docs/content/references/sui-api.mdx) topic
 for instructions about how to start a local network and local RPC server.
 
 ## Building Locally
@@ -92,7 +93,7 @@ Some more follow up here is if you used homebrew to install node, there could be
 node on your machine.
 https://stackoverflow.com/questions/52676244/node-version-not-updating-after-nvm-use-on-mac
 
-To run E2E tests against DevNet
+To run E2E tests against Devnet
 
 ```
 VITE_FAUCET_URL='https://faucet.devnet.sui.io:443/gas' VITE_FULLNODE_URL='https://fullnode.devnet.sui.io' pnpm --filter @mysten/sui.js exec vitest e2e
@@ -104,7 +105,7 @@ The `SuiClient` class provides a connection to the JSON-RPC Server and should be
 read-only operations. The default URLs to connect with the RPC server are:
 
 - local: http://127.0.0.1:9000
-- DevNet: https://fullnode.devnet.sui.io
+- Devnet: https://fullnode.devnet.sui.io
 
 ```typescript
 import { getFullnodeUrl, SuiClient } from '@mysten/sui.js/client';