(DOCSP-17384) Correct role for setting system variable (#331)

Author: zach-carr

source/reference/system-variables.txt

@@ -154,7 +154,7 @@ Overview
 Setting System Variables
 ------------------------
 
-You must have the :authrole:`Organization Owner` role to set environment
+You must have the :atlas:`atlasAdmin </security-add-mongodb-users/#database-user-privileges>` database role to set environment
 variables on an Atlas-hosted |bi-short|. To set them for an on-premises
 |bi-short|, you must have the :authaction:`inprog` privilege on the
 MongoDB database to which you've connected the |bi-short|.