We have documented how to have some documentation online.
Your modifications changed the URL, but then pops-up with requiring credential, which it shouldn't, but worse is that it doesn't accept the credentials provided. I have enabled TLS for login, so it shouldn't require a login and I also have enable LDAP. Regardless of the login mechanism, it doesn't like the credentials. The login configuration for local user, takes my credentials, but when I then provide the same credentials as I just logged in with, it rejects the login.
UCMDB broke the help in 10.3X. I can still get to help with PKI/TLS login on 10.22, without being prompted for user/password. In 10.33, I get prompted, but the login takes. In 2019.05 (11.XX), I am prompted, but credentials are not taken (whether logged as an internal user or PKI/TLS where no login is needed.
I even tried to use UISysadmin, admin and sysadmin users don't work. The pop-up is Windows Security. The message is "The server <my UCMDB server> is asking for your user name and password. The server reports that it is User Realm.