Sync with the stable documentation branch (scala#17466)

This pull request is syncing the main with changes from
language-reference-stable.

It was created automatically after
28fec6b by @bishabosha

Author: julienrf

docs/_docs/reference/experimental/fewer-braces.md

@@ -4,4 +4,4 @@ title: "Fewer Braces"
 nightlyOf: https://docs.scala-lang.org/scala3/reference/experimental/fewer-braces.html
 ---
 
-The documentation contained in this file is now part of [./indentation.html].
+The documentation contained in this file is now part of the [indentation page](../other-new-features/indentation.html).

scaladoc/resources/dotty_res/styles/theme/layout/content.css

@@ -229,6 +229,15 @@
   vertical-align: top;
 }
 
+/* content blockquote */
+#content blockquote {
+  color: var(--text-secondary);
+  border-left: 4px solid var(--border-default);
+  padding: 0 calc(2 * var(--base-spacing));
+  margin-inline-start: calc(2 * var(--base-spacing));
+  margin-inline-end: calc(2 * var(--base-spacing));
+}
+
 /* content link */
 #content a {
   color: var(--text-primary);