I suggest positioning the keyboard shortcut icon right after the Emphasis icon, also called the Italics icon, which looks like this: [![enter image description here][1]][1]

I think it would look a little bit ugly there, but I don't care about that. What I do care about is the user experience factor. The proposed keyboard shortcut icon would look a little bit mean there, which would give users a visual cue that it's OK to be mean on the website, which is not good design from a community perspective.


  [1]: https://i.sstatic.net/vxKyW.png