We’ve noticed that some users still include the URL scheme and full path
when logging into an OCI registry, for example:
```sh
helm registry login -u $OCI_REGISTRY_USER --password-stdin oci://ghcr.io/org/repo
```
This is no longer necessary and will not be supported in Helm v4.
To guide users toward the correct usage, we should show an example of
the ideal command.
Signed-off-by: Benoit Tigeot <benoit.tigeot@lifen.fr>
Benoit Tigeot