Fix a broken link to the `dependabot_alert` webhook documentation (#31508)

data/reusables/webhooks/repository_vulnerability_alert_short_desc.md

@@ -1,6 +1,6 @@
 {% warning %}
 
-**Deprecation note**: The `repository_vulnerability_alert` webhook events described below are deprecated and are documented here for reference only. Use [`dependabot_alert`](#dependabot-alert) as an alternative.
+**Deprecation note**: The `repository_vulnerability_alert` webhook events described below are deprecated and are documented here for reference only. Use [`dependabot_alert`](#dependabot_alert) as an alternative.
 
 {% endwarning %}