Fix a typo in variable name #18730

Author: dmytro-ch

lib/web/css/source/lib/variables/_sections.less

@@ -40,8 +40,8 @@
 @tab-control__active__color: @text__color;
 @tab-control__active__text-decoration: @tab-control__text-decoration;
 
-@tab-control__visited__color: @accordion-control__color;
-@tab-control__visited__text-decoration: @accordion-control__text-decoration;
+@tab-control__visited__color: @tab-control__color;
+@tab-control__visited__text-decoration: @tab-control__text-decoration;
 
 @tab-content__background-color: @tab-control__active__background-color;
 @tab-content__border-top-status: false;