Make indentation level in `roles/custom/matrix-bot-draupnir/defaults/main.yml` consistent

roles/custom/matrix-bot-draupnir/defaults/main.yml

@@ -148,9 +148,9 @@ matrix_bot_draupnir_synapse_http_antispam_config_base_url: "{{ matrix_bot_draupn
 # Therefore the module is configured from Draupnir because the consumer of the module determines what settings are relevant.
 
 matrix_bot_draupnir_synapse_http_antispam_config_enabled_callbacks:
-   - check_event_for_spam: true
-   - user_may_invite: true
-   - user_may_join_room: true
+  - check_event_for_spam: true
+  - user_may_invite: true
+  - user_may_join_room: true
 
 matrix_bot_draupnir_synapse_http_antispam_config_fail_open:
   check_event_for_spam: true