Update MCP Readme with autostart option (eclipse-theia#15046)

* Update MCP Readme with autostart option

fixed eclipse-theia#15045

packages/ai-mcp/README.md

@@ -41,7 +41,10 @@ The AI MCP package provides an integration that allows users to start and use MC
 
 ## Configuration
 
-Make sure to configure your MCP servers properly within the preference settings.
+To configure MCP servers, open the preferences and add entries to the `MCP Servers Configuration` section. Each server requires a unique identifier (e.g., `"brave-search"` or `"filesystem"`) and configuration details such as the command, arguments, optional environment variables, and autostart (true by default).
+
+`"autostart"` (true by default) will automatically start the respective MCP server whenever you restart your Theia application. In your current session, however, you'll still need to **manually start it** using the `"MCP: Start MCP Server"` command.
+
 
 Example Configuration:
 
@@ -53,7 +56,8 @@ Example Configuration:
             "args": [
               "-y",
               "@modelcontextprotocol/server-memory"
-            ]
+            ],
+            "autostart": false
           },
           "brave-search": {
             "command": "npx",
@@ -73,6 +77,23 @@ Example Configuration:
               "ABSOLUTE_PATH_TO_ALLOWED_DIRECTORY",
             ]
           },
+          "git": {
+            "command": "uv",
+            "args": [
+              "--directory",
+              "/path/to/repo",
+              "run",
+              "mcp-server-git"
+            ]
+          },
+          "git2": {
+            "command": "uvx",
+            "args": [
+              "mcp-server-git",
+              "--repository",
+              "/path/to/otherrepo"
+            ]
+          }
     }
 }
 ```
@@ -88,4 +109,5 @@ Search the internet for XYZ
 ```
 
 ## More Information
+[User documentation on MCP in the Theia IDE](https://theia-ide.org/docs/user_ai/#mcp-integration)
 [List of available MCP servers](https://github.com/modelcontextprotocol/servers)