Fix anchor for RBAC support help link

The RBAC section header was changed, causing the anchor to change as
well. For our first release with RBAC support, it is important
we get the link right.

Author: Thong Kuah

app/views/projects/clusters/gcp/_form.html.haml

@@ -68,7 +68,7 @@
         .form-text.text-muted
           = s_('ClusterIntegration|Enable this setting if using role-based access control (RBAC).')
           = s_('ClusterIntegration|This option will allow you to install applications on RBAC clusters.')
-          = link_to _('More information'), help_page_path('user/project/clusters/index.md', anchor: 'role-based-access-control-rbac-experimental-support'), target: '_blank'
+          = link_to _('More information'), help_page_path('user/project/clusters/index.md', anchor: 'role-based-access-control-rbac-core-only'), target: '_blank'
 
     .form-group
       = field.submit s_('ClusterIntegration|Create Kubernetes cluster'), class: 'js-gke-cluster-creation-submit btn btn-success', disabled: true

app/views/projects/clusters/user/_form.html.haml

@@ -32,7 +32,7 @@
         .form-text.text-muted
           = s_('ClusterIntegration|Enable this setting if using role-based access control (RBAC).')
           = s_('ClusterIntegration|This option will allow you to install applications on RBAC clusters.')
-          = link_to _('More information'), help_page_path('user/project/clusters/index.md', anchor: 'role-based-access-control-rbac-experimental-support'), target: '_blank'
+          = link_to _('More information'), help_page_path('user/project/clusters/index.md', anchor: 'role-based-access-control-rbac-core-only'), target: '_blank'
 
     .form-group
       = field.submit s_('ClusterIntegration|Add Kubernetes cluster'), class: 'btn btn-success'