ENGCOM-3991: Static test fix.

Author: p-bystritsky

app/design/frontend/Magento/luma/Magento_CatalogSearch/web/css/source/_module.less

@@ -20,17 +20,17 @@
 & when (@media-common = true) {
 
     .search {
-	 .fieldset {
-	     .control {
-		  .addon {
-		      input {
-			 flex-basis: auto;
-		         width: 100%;
-			 }
-		     }
-		 }
-	     }
-         }
+        .fieldset {
+            .control {
+                .addon {
+                    input {
+                        flex-basis: auto;
+                        width: 100%;
+                    }
+                }
+            }
+        }
+    }
 
     .block-search {
         margin-bottom: 0;