Spelling fix

git-svn-id: https://plugins.svn.wordpress.org/call-tracking-metrics/trunk@949811 b8457f37-d9ea-0310-8a92-e5e31aec5664
ready for new release

git-svn-id: https://plugins.svn.wordpress.org/call-tracking-metrics/trunk@949813 b8457f37-d9ea-0310-8a92-e5e31aec5664