Use wp cli to set development mode true

[mikeritter]

Adds instructions to set development mode to true using wp cli in the terminal

Description

Screenshots

Testing Instructions

[github-actions]

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Co-authored-by: mikeritter <ritterml@git.wordpress.org>
Co-authored-by: juanfra <juanfra@git.wordpress.org>
Co-authored-by: huzaifaalmesbah <huzaifaalmesbah@git.wordpress.org>

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[juanfra]

Thanks for the PR!

✅ LGTM

[huzaifaalmesbah]

Great! This is very helpful and looks good.

[juanfra]

Thanks for the changes, we should also remove the --raw flag so that it places the value in a quoted string.

[mikeritter]

cleaned up code example and corrected typo

[juanfra]

Thank you @mikeritter 🚀