Fix ensure registered methods

Author: tulir

mautrix/appservice/api/intent.py

@@ -72,7 +72,7 @@ def quote(*args, **kwargs):
     ClientAPI.set_displayname,
     ClientAPI.set_avatar_url,
     ClientAPI.beeper_update_profile,
-    ClientAPI.unstable_create_mxc,
+    ClientAPI.create_mxc,
     ClientAPI.upload_media,
     ClientAPI.send_receipt,
     ClientAPI.set_fully_read_marker,