Address nits

Author: aravind-segu

src/mcp/client/streamable_http.py

@@ -478,11 +478,12 @@ async def streamablehttp_client(
     `sse_read_timeout` determines how long (in seconds) the client will wait for a new
     event before disconnecting. All other HTTP operations are controlled by `timeout`.
 
-    `auth_client_provider` is an optional protocol that can be extended to implement
-    custom client-to-server authentication. Before each request to the MCP Server,
-    the get_token method is invoked to retrieve a fresh authentication token and
-    update the request headers. Note that if the passed in headers already
-    contain an authorization header, this provider will not be called.
+    `auth_client_provider` instance of `AuthClientProvider` that can be passed to
+    support client-to-server authentication. Before each request to the MCP Server,
+    the auth_client_provider.get_token method is invoked to retrieve a fresh
+    authentication token and update the request headers. Note that if the passed in
+    `headers` already contain an Authorization header, that header will take precedence
+    over any tokens generated by this provider.
 
     Yields:
         Tuple containing: