rtmp-services: Specify RTMP_SERVICES_FORMAT_VERSION in package.json

plugins/rtmp-services/data/package.json

@@ -1,11 +1,11 @@
 {
     "$schema": "schema/package-schema.json",
-    "url": "https://obsproject.com/obs2_update/rtmp-services",
-    "version": 215,
+    "url": "https://obsproject.com/obs2_update/rtmp-services/v4",
+    "version": 216,
     "files": [
         {
             "name": "services.json",
-            "version": 215
+            "version": 216
         }
     ]
 }