minor #888 [MCP Bundle][Docs] add required route configuration (axi)

This PR was merged into the main branch.

Discussion
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[MCP Bundle][Docs] add required route configuration

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| Docs?         | yes
| Issues        |
| License       | MIT

By simply installing the bundle, I couldn't use it as the route was not known.
I had to add the routing configuration for the route to appear.
I thought it would be clearer to add that in the doc.

Commits
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e68bb8c0 [MCP Bundle][Docs] add missing required route configuration for the bundle to work

docs/bundles/mcp-bundle.rst

@@ -17,6 +17,15 @@ Usage
 
 At first, you need to decide whether your application should act as a MCP server or client. Both can be configured in
 the ``mcp`` section of your ``config/packages/mcp.yaml`` file.
+You also need to add few lines in the routing configuration for this bundle:
+
+.. code-block:: yaml
+
+    # config/routes.yaml
+    mcp:
+        resource: .
+        type: mcp
+
 
 Act as Server
 ~~~~~~~~~~~~~
@@ -199,6 +208,7 @@ Configuration
                 directory: '%kernel.cache_dir%/mcp-sessions' # Directory for file store (default: cache_dir/mcp-sessions)
                 ttl: 3600 # Session TTL in seconds (default: 3600)
 
+        # Not supported yet
         servers:
             name:
                 transport: 'stdio' # Transport method to use, either 'stdio' or 'http'