rtmp-services: Update Facebook Live encoder settings

As commented on: https://github.com/jp9000/obs-studio/commit/cab28190337255a85bbc7b244f2821f3adebeb5f#commitcomment-17482672
And according to: https://www.facebook.com/facebookmedia/get-started/live

Max 2-second keyframe interval and max video bitrate of 2500.

Closes jp9000/obs-studio#541

plugins/rtmp-services/data/package.json

 {
 	"url": "https://obsproject.com/obs2_update/rtmp-services",
-	"version": 21,
+	"version": 22,
 	"files": [
 		{
 			"name": "services.json",
-			"version": 21
+			"version": 22
 		}
 	]
 }

plugins/rtmp-services/data/services.json

@@ -472,9 +472,9 @@
                 }
             ],
             "recommended": {
-                "keyint": 1,
+                "keyint": 2,
                 "profile": "main",
-                "max video bitrate": 2000,
+                "max video bitrate": 2500,
                 "max audio bitrate": 160
             }
         },