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What should I do when there is a minor but crucial typo in a post (perhaps of literally one character) that is otherwise perfect?

Occasionally I come across a question or answer that is perfect other than literally only one or two characters in the body wrong. I can’t recall a precise one as of now, but as a hypothetical example, suppose an answer to a question contained the text

...since the discriminant of the quadratic $ax^2+bx+c$ is $b^3-4ac$...

This is of course a crucial mistake, probably just a typo, that’d could confuse someone who is learning this. I’d want to suggest an edit where that $3$ should be changed to a $2$.

The issue is, that edit is only one character, and there’s a minimum length for edits before it’ll let you suggest one (I believe its 6 or 10 or 12 characters or something like that). Usually I can mess about with something else - perhaps there is some grammatical error, or I can add some clarity, or remove something unnecessary, or whatever. But what if the post is otherwise perfect? What to do?

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    $\begingroup$ You can either leave a comment and hope that someone else will fix it, or you can make the edit and clean up any other problems as you go (nothing is perfect---you can probably find other typos which need correction). $\endgroup$
    – Xander Henderson Mod
    Nov 20 at 21:48
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    $\begingroup$ Welcome to Math Meta. FYI, in the "Related" section on the right, there's Minimum suggested edit length where, although it's from more than $12$ years ago, its answers nonetheless may be of some interest, & use, to you regarding your question. Also, as stated in the "Is there a minimum change threshold for a suggested edit?" section of the answer to "How do suggested edits work?" in the network Meta FAQ question, "Yes, all suggested edits that modify the body in any way must change at least six characters in the post body". $\endgroup$
    – John Omielan
    Nov 20 at 21:58
  • $\begingroup$ You can always add something to make the question more understandable or perhaps make it look good by changing formatting, spaces etc.. $\endgroup$
    – Dheeraj Gujrathi
    Nov 22 at 6:34

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