Rollup merge of #135499 - lolbinarycat:rustdoc-link-underline-133484, r=GuillaumeGomez

fix underlining of hovered intra-doc links.
fixes#133484
i'm not sure how to create a test case for this, or if that is even possible.

Author: workingjubilee

src/librustdoc/html/static/css/rustdoc.css

@@ -942,6 +942,8 @@ rustdoc-toolbar {
 pre, .rustdoc.src .example-wrap, .example-wrap .src-line-numbers {
 background-color:var(--code-block-background-color);
 border-radius:var(--code-block-border-radius);
+/* code blocks within links (such as in most intra-doc links) should be underlined */
+text-decoration: inherit;
 }
 
 #main-content {