Fix static test.

Author: nmalevanec

app/design/adminhtml/Magento/backend/Magento_Backend/web/css/source/module/main/_store-scope.less

@@ -38,7 +38,7 @@
     .admin__legend {
         .admin__field-tooltip {
             margin-left: -@indent__base;
-            margin-top: 0.5rem;
+            margin-top: .5rem;
         }
     }
 }