message: router: minor doc fixes in stream idle timeout
  Description: Fixes minor doc issue
  Risk Level: Low
  Testing: N/A
  Docs Changes: N/A
  Release Notes: N/A
diff: @@ -457,8 +457,8 @@ message RouteAction {
  google.protobuf.Duration per_try_timeout = 3 [(gogoproto.stdduration) = true];
  }
  - // Specifies the idle timeout for the route. If not specified, there is no per-route idle timeout
  - // specified, although the connection manager wide :ref:`stream_idle_timeout
  + // Specifies the idle timeout for the route. If not specified, there is no per-route idle timeout,
  + // although the connection manager wide :ref:`stream_idle_timeout
  // <envoy_api_field_config.filter.network.http_connection_manager.v2.HttpConnectionManager.stream_idle_timeout>`
  // will still apply. A value of 0 will completely disable the route's idle timeout, even if a
  // connection manager stream idle timeout is configured.
  