Update to Chinese (Traditional) locale [zh_TW]

[SeasonChannel32]

Translation for Video DownloadHelper Version 9.0.2.3
have edit to be clearer some sentences
zh_TW.json
zh_TW.txt

[paulrouget]

Sorry we already got a translation for that language.

I recommend that you try the upcoming version (v9.1 which should be released next week) see if the translation is correct.

If you want to keep track of the current translation status of your language, I recommend following this github repository: https://github.com/aclap-dev/vdhlocales