take a more conventional translation.

There are a few conventional choices but this one should be friendly
and generally accepted by local reader.

Previous version is still comprehensible but lesser users (perhaps
used in Japanese documents) and may give local users a pause.

app/static/settings/languages.json

@@ -8,7 +8,7 @@
   {"name": "Bulgarian (български)", "value": "lang_bg"},
   {"name": "Catalan (Català)", "value": "lang_ca"},
   {"name": "Chinese, Simplified (简体中文)", "value": "lang_zh-CN"},
-  {"name": "Chinese, Traditional (繁体中文)", "value": "lang_zh-TW"},
+  {"name": "Chinese, Traditional (正體中文)", "value": "lang_zh-TW"},
   {"name": "Croatian (Hrvatski)", "value": "lang_hr"},
   {"name": "Czech (čeština)", "value": "lang_cs"},
   {"name": "Danish (Dansk)", "value": "lang_da"},