Static test fix

Author: srsathish92

app/design/adminhtml/Magento/backend/Magento_Tax/web/css/source/_module.less

@@ -14,7 +14,7 @@
 
 .block.mselect-list.paginated {
     .admin__action-multiselect-search-wrap {
-        border:1px solid @color-gray80;
+        border: 1px solid @color-gray80;
         border-bottom: none;
         border-radius: 3px;
         margin: 0;