Add help text to runner edit page that tags should be separated by commas.

app/views/projects/runners/_form.html.haml

@@ -39,6 +39,6 @@
       Tags
     .col-sm-10
       = f.text_field :tag_list, value: runner.tag_list.sort.join(', '), class: 'form-control'
-      .help-block You can setup jobs to only use Runners with specific tags
+      .help-block You can setup jobs to only use Runners with specific tags. Separate tags with commas.
   .form-actions
     = f.submit 'Save changes', class: 'btn btn-save'

changelogs/unreleased/37405-admin-page-runner-tag-help-update.yml

+---
+title: 'Add help text to runner edit: tags should be separated by commas.'
+merge_request:
+author: Brendan O'Leary
+type: added