git: use mailmap for short

gitconfig

@@ -81,7 +81,7 @@
 	decorate = true
 
 [alias]
-	short = log --graph --pretty=format:'%C(yellow)%h%Creset -%C(red)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit --date=relative --patience
+	short = log --graph --pretty=format:'%C(yellow)%h%Creset -%C(red)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%aN>%Creset' --abbrev-commit --date=relative --patience
 	ff = merge --ff-only
 	amend = commit --amend
 	pushf = push --force-with-lease