Merge branch 'docs-gitaly-tier-mention' into 'master'

Add tier badging to Gitaly Cluster page

See merge request gitlab-org/gitlab!50584

doc/administration/gitaly/praefect.md

@@ -5,17 +5,16 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 type: reference
 ---
 
-# Gitaly Cluster
+# Gitaly Cluster **(CORE ONLY)**
 
 [Gitaly](index.md), the service that provides storage for Git repositories, can
 be run in a clustered configuration to increase fault tolerance. In this
 configuration, every Git repository is stored on every Gitaly node in the
-cluster. Multiple clusters (or shards), can be configured.
+cluster. Multiple clusters (or shards) can be configured.
 
 NOTE:
-Gitaly Clusters can be created using [GitLab Core](https://about.gitlab.com/pricing/#self-managed)
-and higher tiers. However, technical support is limited to GitLab Premium and Ultimate customers
-only. Not available in GitLab.com.
+Technical support for Gitaly clusters is limited to GitLab Premium and Ultimate
+customers.
 
 Praefect is a router and transaction manager for Gitaly, and a required
 component for running a Gitaly Cluster.