Update roles/custom/matrix-bridge-appservice-slack/defaults/main.yml: fix indentation

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

roles/custom/matrix-bridge-appservice-slack/defaults/main.yml

@@ -153,7 +153,7 @@ matrix_appservice_slack_configuration_extension_yaml: |
     #    console: "info"
     #    files:
     #    - "./debug.log": "info"
-    #- "./error.log": "error"
+    #    - "./error.log": "error"
 
 matrix_appservice_slack_configuration_extension: "{{ matrix_appservice_slack_configuration_extension_yaml | from_yaml if matrix_appservice_slack_configuration_extension_yaml | from_yaml else {} }}"