Fix keyName function for Cmd key

Corrects return value, expected "Mod" instead of "Cmd-Mod".

Author: benhormann

src/input/keymap.js

@@ -127,7 +127,7 @@ export function addModifierNames(name, event, noShift) {
   let base = name
   if (event.altKey && base != "Alt") name = "Alt-" + name
   if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") name = "Ctrl-" + name
-  if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") name = "Cmd-" + name
+  if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Mod") name = "Cmd-" + name
   if (!noShift && event.shiftKey && base != "Shift") name = "Shift-" + name
   return name
 }