Fix expect empty line before declaration linter issue

Author: alvaromontoro

src/warnings/features/_head.scss

@@ -10,6 +10,7 @@ head {
 head meta[name="viewport"][content*="maximum-scale=1" i],
 head meta[name="viewport"][content*="user-scalable=no" i] {
   @include vectorMessage(warning, "W0016", 458, "The display zoom/scale", "has been disabled.");
+  
   display: block;
   border: 0;
 }