Update Health tab empty message to new tab

The old Applications tab is deprecated

app/views/clusters/clusters/_health.html.haml

@@ -3,4 +3,4 @@
     #prometheus-graphs{ data: @cluster.health_data(clusterable) }
 
   - else
-    %p.settings-message.text-center= s_("ClusterIntegration|In order to view the health of your cluster, you must first install Prometheus in the Applications tab.")
+    %p.settings-message.text-center= s_("ClusterIntegration|In order to view the health of your cluster, you must first enable Prometheus in the Integrations tab.")

locale/gitlab.pot

@@ -7011,7 +7011,7 @@ msgstr ""
 msgid "ClusterIntegration|If you do not wish to delete all associated GitLab resources, you can simply remove the integration."
 msgstr ""
 
-msgid "ClusterIntegration|In order to view the health of your cluster, you must first install Prometheus in the Applications tab."
+msgid "ClusterIntegration|In order to view the health of your cluster, you must first enable Prometheus in the Integrations tab."
 msgstr ""
 
 msgid "ClusterIntegration|Ingress"

spec/features/clusters/cluster_health_dashboard_spec.rb

@@ -33,7 +33,7 @@ RSpec.describe 'Cluster Health board', :js, :kubeclient, :use_clean_rails_memory
 
       click_link 'Health'
 
-      expect(page).to have_text('you must first install Prometheus in the Applications tab')
+      expect(page).to have_text('you must first enable Prometheus in the Integrations tab')
     end
   end