[DOC] Fixes mis-wording/typo in mentoring docs

[wayneadams]

What does this implement/fix? Explain your changes.

These changes fix what looks to be mis-wording/typos in mentoring docs. Though, I'm not 100% sure what the intention was, so this PR is just to start the editing process.

Does your contribution introduce a new dependency? If yes, which one?

No

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[wayneadams]

@all-contributors please add @wayneadams for doc

[allcontributors]

@wayneadams

I've put up a pull request to add @wayneadams! 🎉

[baraline]

Hi, thanks and nice spot ! Tell us when you are done with the editting so we can review.

[wayneadams]

@baraline , I'm done editing and the PR is ready for review.

[baraline]

Just a small typo, otherwise looking good and in line with the other projects, thanks again !

[baraline]

LGTM!