fix(curriculum): fix workshop CSS (freeCodeCamp#63865)

Author: Leomb-coder

curriculum/challenges/english/blocks/learn-css-variables-by-building-a-city-skyline/5d822fd413a79914d39e98fe.md

@@ -29,7 +29,7 @@ You should give `.bb2a` a `margin` of `auto`.
 assert.equal(new __helpers.CSSHelp(document).getStyle('.bb2a')?.margin, "auto");
 ```
 
-You should give `.bb2a` a `width` of `auto`.
+You should give `.bb2a` a `width` of `5vw`.
 
 ```js
 assert.equal(new __helpers.CSSHelp(document).getStyle('.bb2a')?.width, "5vw");

curriculum/challenges/english/blocks/workshop-city-skyline/5d822fd413a79914d39e98fe.md

@@ -29,7 +29,7 @@ You should give `.bb2a` a `margin` of `auto`.
 assert.equal(new __helpers.CSSHelp(document).getStyle('.bb2a')?.margin, "auto");
 ```
 
-You should give `.bb2a` a `width` of `auto`.
+You should give `.bb2a` a `width` of `5vw`.
 
 ```js
 assert.equal(new __helpers.CSSHelp(document).getStyle('.bb2a')?.width, "5vw");