note that repo cache is in beta (#22859)

Author: vtbassmatt

data/release-notes/enterprise-server/3-3/0-rc1.yml

@@ -54,7 +54,7 @@ sections:
         - '{% data variables.product.prodname_ghe_server %} 3.3 includes improvements to the maintenance of repositories, especially for repositories that contain many unreachable objects. Note that the first maintenance cycle after upgrading to {% data variables.product.prodname_ghe_server %} 3.3 may take longer than usual to complete.'
 
         # https://github.com/github/releases/issues/1533
-        - '{% data variables.product.prodname_ghe_server %} 3.3 includes a repository cache for geographically-distributed teams and CI infrastructure. The repository cache keeps a read-only copy of your repositories available in additional geographies, which prevents clients from downloading duplicate Git content from your primary instance. For more information, see "[About repository caching](/admin/enterprise-management/caching-repositories/about-repository-caching)."'
+        - '{% data variables.product.prodname_ghe_server %} 3.3 includes the public beta of a repository cache for geographically-distributed teams and CI infrastructure. The repository cache keeps a read-only copy of your repositories available in additional geographies, which prevents clients from downloading duplicate Git content from your primary instance. For more information, see "[About repository caching](/admin/enterprise-management/caching-repositories/about-repository-caching)."'
 
         # https://github.com/github/releases/issues/1616
         - '{% data variables.product.prodname_ghe_server %} 3.3 includes improvements to the user impersonation process. An impersonation session now requires a justification for the impersonation, actions are recorded in the audit log as being performed as an impersonated user, and the user who is impersonated will receive an email notification that they have been impersonated by an enterprise administrator. For more information, see "[Impersonating a user](/enterprise-server@3.3/admin/user-management/managing-users-in-your-enterprise/impersonating-a-user)."'