The correct spelling is "warranties" (since singular y becomes i when it gets plural).

[sic] means "I copied the word as written in its original, and it was already written that way" [0].

[0]: https://www.merriam-webster.com/dictionary/sic

I probably meant warranties but warrantees works in the sentence just fine too :)

Hey, as long as it's readable, I don't care. I just wanted to note that I quoted you verbatim, not judge you because you pressed letter "e" twice instead of once in an internet forum. :)

In my experience, people very rarely use [sic] when quoting on internet forums - readers will assume any quote was copied and pasted; and the quoted text is directly above yours.

Sometimes people edit their comments after they realize their mistakes; grammar, spelling or otherwise. I use [sic] to denote that "it was like that when I copied it". It's probably from my "old internet" days (/., local forums, etc.).