language docs [ZAfrikaans, Zulu]

Author: ElectronSz

examples/src/docs/en/locale.md

@@ -60,5 +60,7 @@ The following languages are currently supported：
 | Simplified Chinese | zh-CN |
 | Traditional Chinese (TW) | zh-TW |
 | English | en-US |
+| Afrikaans | af-ZA |
+| Zulu | zu-ZA |
 
 If you need to use other languages, you are welcome to contribute PR: just add a language configuration file in [here](https://github.com/huangshuwei/vue-easytable/tree/master/packages/src/locale/lang).