change moodle to wordpress

reactive/wordpress.py

@@ -6,7 +6,7 @@ import charms.apt
 import subprocess
 
 @when_not('apt.installed.wordpress')
-def install_moodle_apt():
+def install_wordpress_apt():
     charms.apt.queue_install(['wordpress'])
     # sets the 'apt.installed.wordpress' flag when done