Update controllers.md
Update controllers.md

Added note that @Route-Annotations cause bugs.
dunglas/DunglasApiBundle,vincentchalamon/core,jdeniau/DunglasApiBundle,meyerbaptiste/core,soyuka/core,lucascherifi/DunglasApiBundle,meyerbaptiste/core,api-platform/core,ahlee2326/DunglasApiBundle,teohhanhui/api-platform-core,soyuka/core,soyuka/core,teohhanhui/api-platform-core,api-platform/core,jdeniau/DunglasApiBundle,vincentchalamon/core,meyerbaptiste/core,api-platform/core,api-platform/core,jdeniau/DunglasApiBundle,soyuka/DunglasApiBundle,leesiongchan/DunglasApiBundle,theofidry/DunglasApiBundle,vincentchalamon/core,meyerbaptiste/core,vincentchalamon/core,yelmontaser/DunglasApiBundle,soyuka/core,teohhanhui/api-platform-core,teohhanhui/api-platform-core,teohhanhui/DunglasApiBundle,jdeniau/DunglasApiBundle