Plugins: Make the message displayed when no plugins are installed more concise.

Props johnjamesjacoby, Presskopp.
Fixes #42336.
Built from https://develop.svn.wordpress.org/trunk@47894


git-svn-id: http://core.svn.wordpress.org/trunk@47668 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/plugin-editor.php

@@ -28,7 +28,7 @@ if ( empty( $plugins ) ) {
 	?>
 	<div class="wrap">
 		<h1><?php echo esc_html( $title ); ?></h1>
-		<div id="message" class="error"><p><?php _e( 'You do not appear to have any plugins available at this time.' ); ?></p></div>
+		<div id="message" class="error"><p><?php _e( 'No plugins are currently available.' ); ?></p></div>
 	</div>
 	<?php
 	require_once ABSPATH . 'wp-admin/admin-footer.php';