Administration: Remove italic text to improve readability.

Italicized text can be difficult to read for some people with dyslexia or related forms of reading disorders. This removes italics on a number of larger blocks onpm run grunt rpf text in the admin. This has been a task 5.3; this commit closes the task. Further instances of italicized text should be addressed individually.

Props afercia, xkon, audrasjb
Fixes #47327
Built from https://develop.svn.wordpress.org/trunk@50032


git-svn-id: http://core.svn.wordpress.org/trunk@49733 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/plugin-editor.php

@@ -288,7 +288,7 @@ $content = esc_textarea( $content );
 			<span class="spinner"></span>
 		</p>
 	<?php else : ?>
-		<p><em>
+		<p>
 			<?php
 			printf(
 				/* translators: %s: Documentation URL. */
@@ -296,7 +296,7 @@ $content = esc_textarea( $content );
 				__( 'https://wordpress.org/support/article/changing-file-permissions/' )
 			);
 			?>
-		</em></p>
+		</p>
 	<?php endif; ?>
 
 	<?php wp_print_file_editor_templates(); ?>