Update nprogress styles and Ruby section (#1709)

* remove link to advanced ruby section

* update nprogress styles to match front

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

Author: Allen Hai

components/references-mdx/runtimes/official-runtimes/official-runtimes.mdx

@@ -403,8 +403,6 @@ gem "cowsay", "~> 0.3.0"
   <InlineCode>cowsay</InlineCode> as a dependency.
 </Caption>
 
-For advanced usage, such as using a Rack Interface for your Ruby projects, see the [Advanced Ruby Usage section](#advanced-usage/advanced-ruby-usage).
-
 ### Ruby Version
 
 New deployments use Ruby 2.7.x as the default version.

styles/nprogress.js

@@ -11,10 +11,7 @@ export default css.global`
   top: 0;
   left: 0;
   width: 100%;
-  height: 2px;
-}
-
-#nprogress .bar {
+  height: 8px;
   background: var(--geist-foreground);
 }