doc: add missing meta for createCipheriv

PR-URL: https://github.com/nodejs/node/pull/18651
Refs: https://github.com/nodejs/node/pull/8281


Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>