Questions and Answers on SE are not about interaction with other users, but about transferring knowledge.
Any unnecessary text should be avoided to make this knowledge resource as accessible and understandable as possible.
This includes salutations, humor, thank-yous, and any information unnecessary to get the question/answer across.
Instead, appreciation ...
The error I got was "Edits must be at least 6 characters; is there something else to improve in this post?"
You can reword another part of your post in addition to changing the single character and it should go through.