WP_HTTP: Fix a typo in the naming of WP_HTTP_Streams::verify_ssl_certificate(). Props SergeyBiryukov See #25007

Built from https://develop.svn.wordpress.org/trunk@25473


git-svn-id: http://core.svn.wordpress.org/trunk@25394 1a063a9b-81f0-0310-95a4-ce76da25c4cd