Follow up to r1734396: CHANGES entry.

Since ssl_run_pre_handshake() is not (yet) in 2.4.x, mention ssl_init_ssl_connection() instead.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1735650 13f79535-47bb-0310-9956-ffa450edef68