Fix logger name for synapse_auto_accept_invite

The name of the logger needs to match the name of the Python module.

Ref: d673c67678/synapse_auto_accept_invite/__init__.py (L20)

roles/custom/matrix-synapse/tasks/ext/synapse-auto-accept-invite/setup_install.yml

@@ -17,5 +17,5 @@
       {{
         matrix_synapse_additional_loggers_auto
         +
-        [{'name': 'matrix_auto_accept_invite', 'level': 'INFO'}]
+        [{'name': 'synapse_auto_accept_invite', 'level': 'INFO'}]
       }}