Add an example to the command doc

Author: danielbachhuber

src/Plugin_Command.php

@@ -1283,6 +1283,17 @@ public function delete( $args, $assoc_args = array() ) {
 	 *     | hello   | inactive       | none   | 1.6     | 1.7.2          |
 	 *     +---------+----------------+--------+---------+----------------+
 	 *
+	 *     # Check whether plugins are still active on WordPress.org
+	 *     $ wp plugin list --format=csv --fields=name,wporg_status,wporg_last_updated
+	 *     +--------------------+--------------+--------------------+
+	 *     | name               | wporg_status | wporg_last_updated |
+	 *     +--------------------+--------------+--------------------+
+	 *     | akismet            | active       | 2023-12-11         |
+	 *     | user-switching     | active       | 2023-11-17         |
+	 *     | wordpress-importer | active       | 2023-04-28         |
+	 *     | local              |              |                    |
+	 *     +--------------------+--------------+--------------------+
+	 *
 	 * @subcommand list
 	 */
 	public function list_( $_, $assoc_args ) {