Update zh_tw.json

[pancake-a-dem]

No description provided.

[Jack-McKalling]

Thanks! From quick glance, I notice that you've renamed the translation key block.storagedrawers.controller_io to block.storagedrawers.controller_slave. This is not correct, it should be the former. At some point this was indeed a change in code, but was a mistake and been reverted since. The slave block has been renamed to IO, to better reflect its usage.