In this document:
https://docs.redhat.com/en/documentation/red_hat_openshift_gitops/1.19/html/multitenancy/multitenancy-support-in-gitops

See screenshot below for exact context.

Search for this line:

dev-/\*

should be replaced with

dev-*

I also note on the same line

 /*

should be replaced with

*

That is, there should be no back/forward slashes in any of these cases.

Corresponding GITOPS bug is https://issues.redhat.com/browse/GITOPS-8022

Screenshot:

See purple/pink underline at bottom of screenshot...