fixed a typo in comment

core/src/mindustry/input/DesktopInput.java

@@ -661,7 +661,7 @@ public class DesktopInput extends InputHandler{
             }
         }
 
-        //update commander inut
+        //update commander unit
         if(Core.input.keyTap(Binding.command)){
             Call.unitCommand(player);
         }