[docs] Fix 404 links

docs/data/toolpad/core/components/sign-in-page/sign-in-page.md

@@ -53,7 +53,7 @@ The component is composable with any authentication library you might want to us
 
 #### Setting up
 
-If you're using [`create-toolpad-app`](/toolpad/core/installation/), or the [Next.js app directory example](https://github.com/mui/mui-toolpad/tree/master/examples/core-auth-nextjs/), Auth.js is already installed. To proceed, add `AUTH_SECRET` to the environment variables by running:
+If you're using [`create-toolpad-app`](/toolpad/core/introduction/installation/), or the [Next.js app directory example](https://github.com/mui/mui-toolpad/tree/master/examples/core-auth-nextjs/), Auth.js is already installed. To proceed, add `AUTH_SECRET` to the environment variables by running:
 
 ```bash
 npx auth secret
@@ -74,7 +74,7 @@ GITHUB_CLIENT_SECRET=<your-client-secret>
 
 ##### Server Configuration
 
-If you're using [`create-toolpad-app`](/toolpad/core/installation/), or the default [Next.js app directory example](https://github.com/mui/mui-toolpad/tree/master/examples/core-auth-nextjs/), this server configuration is already set up for you.
+If you're using [`create-toolpad-app`](/toolpad/core/introduction/installation/), or the default [Next.js app directory example](https://github.com/mui/mui-toolpad/tree/master/examples/core-auth-nextjs/), this server configuration is already set up for you.
 
 Otherwise, follow the [custom sign in page instructions](https://authjs.dev/guides/pages/signin) to set up the server configuration.
 

docs/public/_redirects

@@ -7,7 +7,6 @@
 /toolpad/getting-started/tutorial/ /toolpad/studio/getting-started/ 301
 /toolpad/data-fetching/rest/ /toolpad/studio/concepts/http-requests/ 301
 /toolpad/data-fetching/google-sheets/ /toolpad/studio/how-to-guides/connect-to-googlesheets/ 301
-
 # 2023
 /toolpad/getting-started/quickstart/ /toolpad/studio/getting-started/first-app/ 301
 /toolpad/schema-reference/ /toolpad/studio/reference/file-schema/ 301
@@ -35,16 +34,15 @@
 /toolpad/concepts/managing-state/ /toolpad/studio/concepts/event-handling/ 301
 /toolpad/reference/components/datagrid/ /toolpad/studio/reference/components/data-grid/ 301
 /toolpad/getting-started/overview/ /toolpad/studio/getting-started/ 301
-
 # 2024
-
 # Separate Studio and Core
 /toolpad/getting-started/* /toolpad/studio/getting-started/:splat 301
 /toolpad/examples/* /toolpad/studio/examples/:splat 301
 /toolpad/concepts/* /toolpad/studio/concepts/:splat 301
 /toolpad/components/* /toolpad/studio/components/:splat 301
 /toolpad/how-to-guides/* /toolpad/studio/how-to-guides/:splat 301
 /toolpad/reference/* /toolpad/studio/reference/:splat 301
+/toolpad/core/installation/ /toolpad/core/introduction/installation/ 301
 
 # Create separate namespace on https://mui.com
 / /toolpad/