Remove trivial edit restriction
It seems that Stack Overflow explicitly provides a possibility to edit responses, and even suggests "spelling" in edit comment.
Yet Stack Overflow doesn't allow edits shorter than 6 characters.
So if someone's response reads e.g. "sunchronized" or "amx value," it means I cannot correct correct that response spelling!
P.S. I understand it's yet another of these "6-non-whitespace" issues, but please fix it already!