Fix formatting in minimal-mistakes.scss

Author: felixkoerber

_sass/minimal-mistakes.scss

@@ -5,7 +5,7 @@
 */
 
 /* Variables */
-
+$x-color: #000 !default;
 @import "minimal-mistakes/variables";
 // Custom bootstrap variables must be set or imported *before* bootstrap.
 @import "minimal-mistakes/custom";
@@ -49,4 +49,4 @@
     dl {
       font-size: 0.9em;
     }
-  }
+  }