Fixed reference to old variable name (#103)

Philipp Rintz

16.43.2018 764b9ffef3bf05f8c6bea74cc2961e816527de1d

 assets/scss/coder-rtl.scss

@@ -1,4 +1,4 @@
@import "_colors";
@import "_variables";
@import "_base_rtl";
@import "_content_rtl";
@import "_navigation_rtl";