Added mobile support message.

public/_locales/en/messages.json

@@ -381,12 +381,6 @@
     "whatAutoUpvote": {
         "message": "With this enabled, the extension will upvote all submissions you view if you do not report them. If the notice is disabled, this will not occur."
     },
-    "invidiousInfo1": {
-        "message": "Invidious (the 3rd party YouTube site) support has been added!"
-    },
-    "invidiousInfo2": {
-        "message": "You MUST enable it in the options for it to work."
-    },
     "minDuration": {
         "message": "Minimum duration (seconds):"
     },
@@ -431,5 +425,8 @@
     },
     "betaName": {
         "message": "BETA - SponsorBlock"
+    },
+    "mobileUpdateInfo": {
+        "message": "m.youtube.com is now supported"
     }
 }