Update appsettings.json

Author: AustinBrunkhorst

GameServer.ReverseProxy/appsettings.json

@@ -7,6 +7,10 @@
     }
   },
   "AllowedHosts": "*",
+  "PlayFab": {
+    "TitleId": "<Your Title ID>",
+    "SecretKey": "<Put your secret key in appsettings.Development.json>",
+  },
   "ReverseProxy": {
     "Clusters": {
       "allClusterProps": {