Help/About: Spell out abbreviation in About page text.

Removes the `title` attribute from the `abbr` element in favour of inline text `LCP (Largest Contentful Paint)` to improve accessibility of the phrase as the `title` attribute is often unavailable to assistive technology users. Props wildworks, ryelle. See #63941. git-svn-id: https://develop.svn.wordpress.org/trunk@61258 602fd350-edb4-49c9-b593-d223f7449a82

Author: peterwilsoncc

src/wp-admin/about.php

@@ -138,7 +138,7 @@
 </svg>
 </div>
 <h3><?php _e( 'Performance updates' ); ?></h3>
-<p><?php _e( 'WordPress 6.9 includes a broad set of performance enhancements. A better <abbr title="Largest Contentful Paint">LCP</abbr> metric is achieved through improved loading of conditional and inlined stylesheets, script loading with fetchpriority support, and additional core optimizations. Editor advances include fixes for layout shifts caused by the Video block and faster loading of the terms selector.' ); ?></p>
+<p><?php _e( 'WordPress 6.9 includes a broad set of performance enhancements. A better <abbr>LCP</abbr> (Largest Contentful Paint) metric is achieved through improved loading of conditional and inlined stylesheets, script loading with fetchpriority support, and additional core optimizations. Editor advances include fixes for layout shifts caused by the Video block and faster loading of the terms selector.' ); ?></p>
 </div>
 <div class="column">
 <div class="about__image">