Create Redirect for security cookbook

The pdf security cookbook is outdated.

AC:

Create Redirect (301) from https://typo3.org/fileadmin/t3o_teams/security-team/typo3_security_cookbook_v-0.5.pdf to https://docs.typo3.org/m/typo3/reference-coreapi/master/en-us/Security/Index.html#

Edited Feb 12, 2021 by Thomas Löffler