Fix typo (#32740)

* Fix typo

* Rewrite description to avoid awkward phrasing

Co-authored-by: Mark Otto <otto@github.com>

site/content/docs/5.0/layout/breakpoints.md

@@ -1,7 +1,7 @@
 ---
 layout: docs
 title: Breakpoints
-description: Breakpoints are the triggers in Bootstrap for how your layout responsive changes across device or viewport sizes.
+description: Breakpoints are customizable widths that determine how your responsive layout behaves across device or viewport sizes in Bootstrap.
 group: layout
 aliases: "/docs/5.0/layout/"
 toc: true