Broken link under https://wiki.php.net/rfc/howto

[Crovitche-1623]

Affected page

https://wiki.php.net/rfc/howto

Issue description

The first link returns a 404:
https://blogs.oracle.com/opal/the-mysterious-php-rfc-process-and-how-you-can-change-the-web

[DanielEScherzer]

Switched to using a link to the wayback machine