Upgrade formatting to clang-format 10 (#5895)

* Update formatting tools to clang-format-10

* Reformat using clang-format-10.0.09

src/server/request_handler.cpp

@@ -177,5 +177,5 @@ void RequestHandler::HandleRequest(const http::request &current_request, http::r
                               << ", uri: " << current_request.uri;
     }
 }
-}
-}
+} // namespace server
+} // namespace osrm