Improve Doc comment for profile screen action hook.

[AKSHAT2802]

This PR changes document description for show_user_profile & edit_user_profile action hooks on profile screen.
These both hooks fire after application Passwords Section is loaded and not after About Yourself table.

It goes this way
About Yourself Table -> Account Management -> Application Password Section -> show_user_profile OR edit_user_profile action hook

Trac ticket: https://core.trac.wordpress.org/ticket/62062

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**This Pull Request is for code review only. Please keep all other discussion in the Trac ticket.

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