chore(w3c.json): switch to WebAppsWG

Author: Marcos Cáceres

w3c.json

@@ -1,10 +1,10 @@
 {
   "group": [
-    "83482"
+    "114929"
   ],
   "contacts": [
     "siusin"
   ],
   "shortName": "push-api",
   "repo-type": "rec-track"
-}
+}