[Docs] Clarify support transport mechanisms for MCP #3986
Description
🚀 Describe the new functionality needed
The Llama Stack documentation for MCP does not explicitly list what transport mechanisms are supported. Llama Stack does support both SSE and Streamable HTTP (I have tested both to verify this). It does not directly support STDIO, so anyone with a STDIO server needs to wrap it as SSE or Streamable HTTP. There are plenty of existing capabilities to do that, e.g., Supergateway (which is mentioned but not really explained in an example) or ToolHive.
💡 Why is this needed? What if we don't build it?
I think a sentence or two on this topic would help users better understand what Llama Stack can and can't do. I wouldn't want much more than that.
Other thoughts
No response