Rewrite some callouts to remove most headings and reduce their content

site/content/docs/5.3/components/button-group.md

@@ -18,12 +18,8 @@ Wrap a series of buttons with `.btn` in `.btn-group`.
 </div>
 {{< /example >}}
 
-{{< callout warning >}}
-##### Ensure correct `role` and provide a label
-
-In order for assistive technologies (such as screen readers) to convey that a series of buttons is grouped, an appropriate `role` attribute needs to be provided. For button groups, this would be `role="group"`, while toolbars should have a `role="toolbar"`.
-
-In addition, groups and toolbars should be given an explicit label, as most assistive technologies will otherwise not announce them, despite the presence of the correct role attribute. In the examples provided here, we use `aria-label`, but alternatives such as `aria-labelledby` can also be used.
+{{< callout info >}}
+Button groups require an appropriate `role` attribute and explicit label to ensure assistive technologies like screen readers identify buttons as grouped and announce them. Use `role="group"` for button groups or `role="toolbar"` for button toolbars. Then use `aria-label` or `aria-labelledby` to label them.
 {{< /callout >}}
 
 These classes can also be added to groups of links, as an alternative to the [`.nav` navigation components]({{< docsref "/components/navs-tabs" >}}).