Add missing CSS class to capitalize the protectec tag header dropdown

app/views/projects/protected_tags/_create_protected_tag.html.haml

@@ -2,7 +2,7 @@
   .create_access_levels-container
     = dropdown_tag('Select',
                    options: { toggle_class: 'js-allowed-to-create wide',
-                   dropdown_class: 'dropdown-menu-selectable',
+                   dropdown_class: 'dropdown-menu-selectable capitalize-header',
                    data: { field_name: 'protected_tag[create_access_levels_attributes][0][access_level]', input_id: 'create_access_levels_attributes' }})
 
 = render 'projects/protected_tags/shared/create_protected_tag'