Docs: Improve inline comments per the documentation standards.

Includes minor code layout fixes for better readability.

See #48303.
Built from https://develop.svn.wordpress.org/trunk@47122


git-svn-id: http://core.svn.wordpress.org/trunk@46922 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/import.php

@@ -136,7 +136,8 @@ function wp_import_handle_upload() {
  * @return array Importers with metadata for each.
  */
 function wp_get_popular_importers() {
-	include( ABSPATH . WPINC . '/version.php' ); // Include an unmodified $wp_version.
+	// Include an unmodified $wp_version.
+	include( ABSPATH . WPINC . '/version.php' );
 
 	$locale            = get_user_locale();
 	$cache_key         = 'popular_importers_' . md5( $locale . $wp_version );