fix typo in app.json
fix typo in app.json

PHLF/rasa_nlu,RasaHQ/rasa_nlu,beeva-fernandocerezal/rasa_nlu,PHLF/rasa_nlu,RasaHQ/rasa_nlu,beeva-fernandocerezal/rasa_nlu,verloop/rasa_nlu,RasaHQ/rasa_nlu,verloop/rasa_nlu