What happened in your environment?

After upgraded to ORAS v1.2.0, I noticed that there are no any examples of the flag --format in ORAS CLI command help reference. Users might be hard to understand how to use --format in ORAS CLI commands

What did you expect to happen?

It would be much user-friendly if we could add basic examples for the flag "--format" in the help reference.

How can we reproduce it?

Run "--help" in each oras command

What is the version of your ORAS CLI?

oras v1.2.0

What is your OS environment?

Ubuntu 22.06

Are you willing to submit PRs to fix it?

• Yes, I am willing to fix it.