Update labels empty state [ci skip]

Update clusters empty state

app/views/projects/clusters/_empty_state.html.haml

 .row.empty-state
   .col-xs-12
     .svg-content= image_tag 'illustrations/clusters_empty.svg'
-  .col-xs-12.text-center
+  .col-xs-12
     .text-content
       %h4= s_('ClusterIntegration|Integrate cluster automation')
       - link_to_help_page = link_to(s_('ClusterIntegration|Learn more about Clusters'), help_page_path('user/project/clusters/index'), target: '_blank', rel: 'noopener noreferrer')
       %p= s_('ClusterIntegration|Clusters allow you to use review apps, deploy your applications, run your pipelines, and much more in an easy way. %{link_to_help_page}').html_safe % { link_to_help_page: link_to_help_page}
 
-      %p
+      .text-center
         = link_to s_('ClusterIntegration|Add cluster'), new_project_cluster_path(@project), class: 'btn btn-success'
 

app/views/shared/empty_states/_labels.html.haml

@@ -2,7 +2,7 @@
   .col-xs-12
     .svg-content
       = image_tag 'illustrations/labels.svg'
-  .col-xs-12.text-center
+  .col-xs-12
     .text-content
       %h4 Labels can be applied to issues and merge requests to categorize them.
       %p You can also star a label to make it a priority label.