Found the following in plugin code, but not present in translation.

addon.pluginName = L["config_plugin_name"]
addon.description = L["config_plugin_desc"]

Thanks for the report.
Do you mean on Curseforge or in zhTW.lua ?

Yes L["config_plugin_name"] isn`t available on curseforge.
I would prefer that this isn't translatable.
To make it easier and not confusing to find the addon in your addon manager or on curseforge.

and L["config_plugin_desc"] you already localized.

The plugin name is showed on UI, which I prefer that to be localizable. Some of those are already localized.
Even for those localized ones, the name on curseforge are still English.

as you wish.

I added it on curseforge with a note.