I encountered a few times by now that people make formatting errors in their answers. Sometimes, they just set back ticks ("`") incorrectly, which may destroy the formatting of an entire answer or causes at least some other inconveniences, e.g. making links disappear as is the case in this post.
All these things are natural to happen occasionally, but the strange thing is that they cannot easily be fixed by the community since edits must alter at least 6 characters of a post to be admissible. Thus, in the case of the aforementioned post for example, I myself could not correct the formatting of the post since a correction would have involved deleting only 2 (instead of 6) "`"-signs.
Since this is not the first time that I encounter situations like this, I was wondering whether it is possible to decrease the minimal number of characters to be changed for an edit to become admissible.