Update translation files

Updated by "Remove blank strings" hook in Weblate.

"David.song" <[email protected]> added Chinese (PRC) (zh-cn) translation using Weblate @ translate-h5p.tk.

 Translate-URL: https://translate-h5p.tk/weblate/projects/h5p/h5p-simple-multiple-choice/zh-cn/

Co-authored-by: David.song <[email protected]>
Co-authored-by: Weblate <[email protected]>
Translate-URL: https://translate-h5p.tk/weblate/projects/h5p/h5p-simple-multiple-choice/
Translation: H5P/h5p-simple-multiple-choice

language/zh-cn.json

@@ -0,0 +1 @@
+{}