Fix trailing spaces in Draupnir's `validate_config.yml`

roles/custom/matrix-bot-draupnir/tasks/validate_config.yml

@@ -24,7 +24,7 @@
     - {'old': 'matrix_bot_draupnir_web_enabled', 'new': 'matrix_bot_draupnir_config_web_enabled'}
     - {'old': 'matrix_bot_draupnir_abuse_reporting_enabled', 'new': 'matrix_bot_draupnir_config_web_abuseReporting'}
     - {'old': 'matrix_bot_draupnir_display_reports', 'new': 'matrix_bot_draupnir_config_displayReports'}
- 
+
 - name: Fail if required matrix-bot-draupnir variables are undefined
   ansible.builtin.fail:
     msg: "The `{{ item.name }}` variable must be defined and have a non-null value."