Update playfab.json.ejs (#738)
Update playfab.json.ejs (#738)

adding events nested group item
PlayFab/SDKGenerator,PlayFab/SDKGenerator,PlayFab/SDKGenerator,PlayFab/SDKGenerator,PlayFab/SDKGenerator,PlayFab/SDKGenerator,PlayFab/SDKGenerator,PlayFab/SDKGenerator,PlayFab/SDKGenerator