fix: simplified chinese characters

- add to languages
- update README

README.md

@@ -129,7 +129,7 @@ If you want to contribute code then you can fork this repo, make changes and rai
 ## Translation Contributors
 
 | Language           | Contributors                                                                       |
-| ---------- | ---------------------------------------------------------------------------------- |
+| ------------------ | ---------------------------------------------------------------------------------- |
 | French             | [DeepL](https://www.deepl.com/), [mael-chouteau](https://github.com/mael-chouteau) |
 | German             | [DeepL](https://www.deepl.com/), [barredterra](https://github.com/barredterra)     |
 | Portuguese         | [DeepL](https://www.deepl.com/)                                                    |
@@ -139,6 +139,7 @@ If you want to contribute code then you can fork this repo, make changes and rai
 | Spanish            | [talmax1124](https://github.com/talmax1124)                                        |
 | Gujarati           | [dhruvilxcode](https://github.com/dhruvilxcode)                                    |
 | Korean             | [Isaac-Kwon](https://github.com/Isaac-Kwon)                                        |
+| Simplified Chinese  | [wcxu21](https://github.com/wcxu21)                                                |
 
 ## License
 

src/utils/language.ts

@@ -18,6 +18,7 @@ export const languageCodeMap: Record<string, string> = {
   Gujarati: 'gu',
   Turkish: 'tr',
   Korean: 'ko',
+  'Simplified Chinese': 'zh-CN',
 };
 
 export async function setLanguageMap(