Update gradio-client.mdx

Minor bug fix, updated the URL of the MCP server, old one no longer exists.

Author: m-dawoud

units/en/unit2/gradio-client.mdx

@@ -20,7 +20,7 @@ Let's connect to an example MCP Server that is already running on Hugging Face.
 from smolagents.mcp_client import MCPClient
 
 with MCPClient(
-    {"url": "https://abidlabs-mcp-tools2.hf.space/gradio_api/mcp/sse"}
+    {"url": "https://abidlabs-mcp-tool-http.hf.space/gradio_api/mcp/sse"}
 ) as tools:
     # Tools from the remote server are available
     print("\n".join(f"{t.name}: {t.description}" for t in tools))