docs(contributing): add recent semantic-release formulas

Author: myii

docs/CONTRIBUTING.rst

@@ -179,7 +179,7 @@ These formulas are already compatible with semantic-release:
 * `logrotate-formula <https://github.com/saltstack-formulas/logrotate-formula>`_
 * `mysql-formula <https://github.com/saltstack-formulas/mysql-formula>`_
 * `nginx-formula <https://github.com/saltstack-formulas/nginx-formula>`_
-* [`WIP <https://github.com/saltstack-formulas/openvpn-formula/pull/102>`_] `openvpn-formula <https://github.com/saltstack-formulas/openvpn-formula>`_
+* `openvpn-formula <https://github.com/saltstack-formulas/openvpn-formula>`_
 * [`WIP <https://github.com/saltstack-formulas/packages-formula/pull/54>`_] `packages-formula <https://github.com/saltstack-formulas/packages-formula>`_
 * `php-formula <https://github.com/saltstack-formulas/php-formula>`_
 * `postfix-formula <https://github.com/saltstack-formulas/postfix-formula>`_
@@ -189,7 +189,7 @@ These formulas are already compatible with semantic-release:
 * `salt-formula <https://github.com/saltstack-formulas/salt-formula>`_
 * `sudoers-formula <https://github.com/saltstack-formulas/sudoers-formula>`_
 * `syslog-ng-formula <https://github.com/saltstack-formulas/syslog-ng-formula>`_
-* [`WIP <https://github.com/saltstack-formulas/sysstat-formula/pull/12>`_] `sysstat-formula <https://github.com/saltstack-formulas/sysstat-formula>`_
+* `sysstat-formula <https://github.com/saltstack-formulas/sysstat-formula>`_
 * `systemd-formula <https://github.com/saltstack-formulas/systemd-formula>`_
 * `template-formula <https://github.com/saltstack-formulas/template-formula>`_
 * `ufw-formula <https://github.com/saltstack-formulas/ufw-formula>`_