Update app_levels/en.json

Co-Authored-By: maniackcrudelis <maniackcrudelis@users.noreply.github.com>

app_levels/en.json

@@ -5,7 +5,7 @@
     "applevel_3":  "Can be updated",
     "applevel_4":  "Backup and restore support",
     "applevel_5":  "Clean",
-    "applevel_6":  "Available for the community",
+    "applevel_6":  "Open to contributions from the community",
     "applevel_7":  "Successfully pass functional tests",
     "applevel_8":  "High quality app",
     "applevel_9":  "Respect higher guidelines",