[DOC] Update reset admin password documentation

[git-hyagi]

Describe the solution you'd like
Update doc to also mention to not update the admin password via Pulp API.

pulp-operator/docs/configuring/reset_admin_pwd.md

Lines 59 to 61 in e8ef354

	!!! WARNING
	We don't recommend running the `pulpcore-manager reset-admin-password` command manually.
	Any modification in `admin_password_secret` `Secret` will override Pulp admin password.

maybe:

 We don't recommend running the `pulpcore-manager reset-admin-password` command nor updating the password via `/api/v3/users` endpoint.
 Any modification in `admin_password_secret` `Secret` will override Pulp admin password.