[skip ci]Fix golint error for GetComponentStates in QueryCoord (#10810)

Signed-off-by: cai.zhang <cai.zhang@zilliz.com>

internal/distributed/querycoord/service.go

@@ -248,6 +248,7 @@ func (s *Server) SetDataCoord(d types.DataCoord) error {
 	return nil
 }
 
+// GetComponentStates gets the component states of QueryCoord.
 func (s *Server) GetComponentStates(ctx context.Context, req *internalpb.GetComponentStatesRequest) (*internalpb.ComponentStates, error) {
 	return s.queryCoord.GetComponentStates(ctx)
 }