add a case for "zh-Hant" language code in 07.fix

https://github.com/paracrawl/cirrus-scripts/blob/d822f608c4ae5e1b0ead8c8c445d0c10e6b50c62/07.fix#L11

```
if [[ $lang == no ]]; then
	bicleaner_lang=nb
elif [[ $lang == zh-Hant ]]; then
    bicleaner_lang=zh
else
	bicleaner_lang=$lang
fi
```