docs: Update command-line-interface.md

[ethanscorey]

Removed reference to --ignore-path flag from documentation

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[ x] Documentation update
[ ] Bug fix (template)
[ ] New rule (template)
[ ] Changes an existing rule (template)
[ ] Add autofix to a rule
[ ] Add a CLI option
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What changes did you make? (Give an overview)

I removed the reference to the --ignore-path CLI argument from the documentation, because this CLI argument is no longer supported.

Is there anything you'd like reviewers to focus on?

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: ethanscorey / name: Ethan Corey (a7204c1)

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[mdjermanovic]

Hi, @ethanscorey! Thanks for the PR, but this CLI option is still supported in eslintrc mode so we should keep it in the list for now. We are preparing a PR to mark options that are only available in eslintrc mode (i.e., not available in flat config mode): #17664.