Updated the title

doc/user/project/clusters/add_remove_clusters.md

@@ -4,7 +4,7 @@ group: Configure
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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-# Adding and removing Kubernetes clusters **(FREE)**
+# Add a cluster using cluster certificates **(FREE)**
 
 GitLab offers integrated cluster creation for the following Kubernetes providers: