feat: improve README_zh.md

2023-06-10 13:43:18 +08:00 · 2023-06-10 13:43:18 +08:00 · ff376a6bea
--- a/README_zh.md
+++ b/README_zh.md
@ -1,7 +1,7 @@
 <div align="center">

 # GPT4Free TypeScript Version 🆓
-###### Providing a free OpenAI GPT-4 API!
+###### 提供免费的GPT4 API
 [English](README.md) | 中文

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