Changed indent to meet the standard

Author: rogyar

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

@@ -87,18 +87,18 @@
 //  _____________________________________________
 
 .media-width(@extremum, @break) when (@extremum = 'max') and (@break = @screen__m) {
-  .block{
-    &.newsletter {
-      input {
-        font-size: 12px;
-        padding-left: 30px;
-      }
-
-      .field {
-        .control:before{
-          font-size: 13px;
+    .block {
+        &.newsletter {
+            input {
+                font-size: 12px;
+                padding-left: 30px;
+            }
+
+            .field {
+                .control:before {
+                    font-size: 13px;
+                }
+            }
         }
-      }
     }
-  }
 }