A couple of small changes regarding function names used in examples and additional functions listed in references section for openssl_spki_new()

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@333256 c90b9560-bf6c-de11-be94-00142212c4b1
Updated example usage to include <keygen> element

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@333257 c90b9560-bf6c-de11-be94-00142212c4b1