As you can see, it only works on Google right now...
https://github.com/programmin1/Autocorrect-remover/blob/master/manifest.json
This should have another js file built out for doing the same autocorrect removal (eg "ohter" not always automatically change to other), built for office word online (https://onedrive.live.com/edit.aspx?)
and any other popular word processor programs that do this.