[Meltdown Mitigation] Typo

[lfmalves]

Small typo on the intro to the exercise "meltdown mitigation"

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[BethanyG]

Hi @lfmalves 👋🏽

Thank you for the PR. 😄 Since the introduction.md for the concept exercise borrows heavily from the concept docs for the conditionals concept, could you check the introduction.md and about.md files for the concept to see if the correction is needed?

If so, we should correct those docs as well before merging.

Many thanks!

FYI: In the future, you should open a thread on our forum for discussion before submitting PRs to this repo (as noted in the auto-reply above).

[lfmalves]

Hi @BethanyG ,
Thanks for your response. I checked these two cited files (introduction.md and about.md) and this same typo does not happen in them, nor could I find any other problems with them.