Help/About: Spell out abbreviation in About page text

Author: ryelle

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">