Pontoon: Update Chinese (zh-TW) localization of Thimble
Pontoon: Update Chinese (zh-TW) localization of Thimble

Localization authors:
- Pin-guang Chen <petercpg@mail.moztw.org>

mozilla/thimble.mozilla.org,humphd/thimble.mozilla.org,humphd/thimble.mozilla.org,mozilla/thimble.mozilla.org,mozilla/thimble.mozilla.org,humphd/thimble.mozilla.org,mozilla/thimble.mozilla.org,humphd/thimble.mozilla.org