Upgrade formatting to clang-format 10 (#5895)

* Update formatting tools to clang-format-10

* Reformat using clang-format-10.0.09

src/engine/plugins/viaroute.cpp

@@ -183,6 +183,6 @@ Status ViaRoutePlugin::HandleRequest(const RoutingAlgorithmsInterface &algorithm
 
     return Status::Ok;
 }
-}
-}
-}
+} // namespace plugins
+} // namespace engine
+} // namespace osrm