Typo.

git-svn-id: https://plugins.svn.wordpress.org/varnish-http-purge/trunk@759505 b8457f37-d9ea-0310-8a92-e5e31aec5664
Typo better fix

git-svn-id: https://plugins.svn.wordpress.org/varnish-http-purge/trunk@759506 b8457f37-d9ea-0310-8a92-e5e31aec5664