Examples were shown for experimental feature

[yizha1]

What is the areas you experience the issue in?

Notation CLI

What is not working as expected?

Examples were shown for experimental features when the NOTATION_EXPERIMENTAL=1 was not set.

notation sign -h

Example - [Experimental] Sign an OCI artifact referenced in an OCI layout
  notation sign --oci-layout "<oci_layout_path>@<digest>"

Example - [Experimental] Sign an OCI artifact identified by a tag and referenced in an OCI layout
  notation sign --oci-layout "<oci_layout_path>:<tag>"

Example - [Experimental] Sign an OCI artifact and use OCI artifact manifest to store the signature:
  notation sign --signature-manifest artifact <registry>/<repository>@<digest>

notation verify -h

Example - [Experimental] Verify a signature on an OCI artifact referenced in an OCI layout using trust policy statement specified by scope.
  notation verify --oci-layout <registry>/<repository>@<digest> --scope <trust_policy_scope>

Example - [Experimental] Verify a signature on an OCI artifact identified by a tag and referenced in an OCI layout using trust policy statement specified by scope.
  notation verify --oci-layout <registry>/<repository>:<tag> --scope <trust_policy_scope>

What did you expect to happen?

Examples should not be shown for experimental features unless the NOTATION_EXPERIMENTAL=1 was set.

How can we reproduce it?

Steps:

unset NOTATION_EXPERIMENTAL
notation sign -h
notation verify -h

Check the examples from the output

Describe your environment

WSL

What is the version of your Notation CLI or Notation Library?

notation CLI v1.0.0-rc.4

[patrickzheng200]

Will take this one.