fix hangout displayname bug

roles/matrix-bridge-mautrix-hangouts/defaults/main.yml

@@ -87,7 +87,7 @@ matrix_mautrix_hangouts_configuration_yaml: |
       # {displayname} is replaced with the display name of the Hangouts user
       #               as defined below in displayname_preference.
       # Keys available for displayname_preference are also available here.
-      displayname_template: '{displayname} (HO)'
+      displayname_template: '{full_name} (Hangouts)'
       # Available keys:
       # "name" (full name)
       # "first_name"