Update modules/authentication/proc-enabling-authentication-with-github.adoc

Co-authored-by: Kim Tsao <[email protected]>

Author: themr0c

modules/authentication/proc-enabling-authentication-with-github.adoc

@@ -73,8 +73,8 @@ plugins:
 catalog:
   providers:
     githubOrg:
-      githubUrl: "${GITHUB_HOST_DOMAIN}"
-      orgs: [ "${GITHUB_ORGANIZATION}" ]
+      githubUrl: "${AUTHENTICATION_GITHUB_HOST_DOMAIN}"
+      orgs: [ "${AUTHENTICATION_GITHUB_ORGANIZATION}" ]
       schedule:
         frequency:
           minutes: 30