docs: mark ruby as in beta

docs/docs/calling-baml/calling-functions.mdx

@@ -81,7 +81,7 @@ if (require.main === module) {
 ```
 </Tab>
 
-<Tab title="Ruby">
+<Tab title="Ruby (beta)">
 
 BAML will generate `Baml.Client.ClassifyMessage()` for you, which you can use like so:
 

docs/docs/calling-baml/concurrent-calls.mdx

@@ -75,9 +75,9 @@ if (require.main === module) {
 ```
 </Tab>
 
-<Tab title="Ruby">
+<Tab title="Ruby (beta)">
 
-BAML Ruby does not currently support async/concurrent calls.
+BAML Ruby (beta) does not currently support async/concurrent calls.
 
 Please [contact us](/contact) if this is something you need.
 

docs/docs/calling-baml/dynamic-types.mdx

@@ -63,7 +63,7 @@ async function run() {
 ```
 
 
-```ruby Ruby
+```ruby Ruby (beta)
 Not available yet
 ```
 </CodeGroup>

docs/docs/calling-baml/generate-baml-client.mdx

@@ -49,7 +49,7 @@ yarn add @boundaryml/baml
 yarn run baml-cli generate --from path/to/baml_src
 ```
 
-```bash Ruby
+```bash Ruby (beta)
 bundle add baml
 bundle exec baml-cli generate --from path/to/baml_src
 ```
@@ -126,7 +126,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      # Install your Python/Node/Ruby dependencies here
+      # Install your Python/Node/Ruby (beta) dependencies here
 
       - name: Generate BAML client
         run: baml-cli generate --from baml_src

docs/docs/calling-baml/multi-modal.mdx

@@ -41,7 +41,7 @@ import { Image } from "@boundaryml/baml"
 
 ```
 
-```ruby Ruby
+```ruby Ruby (beta)
 we're working on it!
 ```
 
@@ -88,7 +88,7 @@ import { Audio } from "@boundaryml/baml"
   
 ```
 
-```ruby Ruby
+```ruby Ruby (beta)
 we're working on it!
 ```
 </CodeGroup>

docs/docs/calling-baml/set-env-vars.mdx

@@ -42,7 +42,7 @@ dotenv.config()
 import { b } from 'baml-client'
 ```
 
-```ruby Ruby
+```ruby Ruby (beta)
 require 'dotenv/load'
 
 # Wait to import the BAML client until after loading environment variables

docs/docs/calling-baml/streaming.mdx

@@ -161,7 +161,7 @@ if (require.main === module) {
 ```
 </Tab>
 
-<Tab title="Ruby">
+<Tab title="Ruby (beta)">
 BAML will generate `Baml.Client.stream.ExtractReceiptInfo()` for you,
 which you can use like so: