Make connected/disconnected terminology more generically correct
Currently it says "AC adaptor plugged in/unplugged". This has a few issues:
- "adaptor" is an uncommon regional spelling and not correct US American English
- The power source may not involve any AC voltage at all (e.g. a PlaMo-running phone plugged into a computer's USB port
- There may not even be any kind of adapter or plug at all (e.g. inductive charging for a PlaMo device)
Accordingly, let's use more generic terminology here.
cc @teams/vdg
[Maybe we need a localization team we can CC as well?]
Edited by Nate Graham