Fix Damien's comments

Author: NolwennP

styles/404.less

@@ -6,4 +6,3 @@
         margin: 10px 0;
     }
 }
-

styles/variables.less

@@ -114,4 +114,4 @@ li {
 @import "link.less";
 @import "forms.less";
 @import "landing-page.less";
-@import "404.less";
+@import "404.less";