delete content on the right of cursor, Mac

It's not convenient to press Fn+delete to delete content on the right of cursor, on Macintosh.

Use Karabiner to remap RightShift+delete to Fn+delete so that we can only one right hand to implement that deleting backward.

Edit the json ~/.config/karabiner/karabiner.json

ReInstall this app to make it take effect. Sounds strange but i didn't find approprate way to take it effect.