Merge branch 'docs-agentk-multi-arch-support' into 'master'

Add remark that agentk images are multi-arch as of 14.8

See merge request gitlab-org/gitlab!80515

doc/user/clusters/agent/install/index.md

@@ -6,7 +6,8 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 
 # Install the GitLab Agent **(FREE)**
 
-> [Moved](https://gitlab.com/groups/gitlab-org/-/epics/6290) from GitLab Premium to GitLab Free in 14.5.
+> - [Moved](https://gitlab.com/groups/gitlab-org/-/epics/6290) from GitLab Premium to GitLab Free in 14.5.
+> - [Introduced](https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/merge_requests/594) multi-arch images in GitLab 14.8. The first multi-arch release is `v14.8.1`. It supports AMD64 and ARM64 architectures.
 
 To connect a cluster to GitLab, you need to install the GitLab Agent
 onto your cluster.