Fix typo in lore/end_users/setup/README.md
Fix typo in lore/end_users/setup/README.md

variable was spelled variabel.

Signed-off-by: Cullen Taylor <3dcbf3a94b3284553298f41295d5edcb98e95b59@outlook.com>

BonnyCI/bonnyci.org,BonnyCI/bonnyci.org,BonnyCI/bonnyci.org,BonnyCI/bonnyci.org