fix some typos

[jens1o]

I digged into the debugging code and found some typos, I fixed them.

There is actually a misspelled property, I just added a todo note, so extensions won't break.

[msftclas]

@jens1o,
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[msftclas]

@jens1o, thanks for signing the contribution license agreement. We will now validate the agreement and then the pull request.

Thanks, Microsoft Pull Request Bot

[isidorn]

@jens1o Thanks
@alexandrudima you might want to fix the typo Jens found

[alexdima]

Thanks! Done in d167d92