fix link

Author: schavis

website/content/docs/release-notes/1.19.0.mdx

@@ -221,6 +221,6 @@ Follow the learn more links for more information, or browse the list of
 
 Deprecated in 1.19.x | Retired in 1.19.x
 -------------------- | ---------------
-None                 | Active Directory plugin ((/vault/docs/deprecation#ad-secrets-engine))
+None                 | [Active Directory plugin](/vault/docs/deprecation#ad-secrets-engine)
 
 @include 'release-notes/deprecation-note.mdx'