Make heading shorter and less repetitive

Author: RebeccaTamachiro

src/content/docs/secrets-store/access-control.mdx

@@ -13,7 +13,7 @@ Secrets Store allows security administrators to have more control by implementin
 While all Cloudflare accounts will have access to the Secrets Store section on the dashboard, only users with the necessary permissions will be able to interact with it, as described below.
 :::
 
-## Relevant roles for Secrets Store
+## Relevant roles
 
 Refer to the list below for default role definitions.