docs: 更新项目star历史图表并移除多余的语言切换链接

- 用新的star历史图表(2025624)替换旧的(2025612)
- 从docs/README.md中移除中英文切换链接

README.md

@@ -110,7 +110,7 @@
 ## Star History
 
 <div align='center'>
-    <img src="./images/star-history-2025612.png" alt="Datawhale" width="90%">
+    <img src="./images/star-history-2025624.png" alt="Datawhale" width="90%">
 </div>
 
 <div align="center">

README_en.md

@@ -109,7 +109,7 @@ We welcome any form of contribution!
 ## Star History
 
 <div align='center'>
-    <img src="./images/star-history-2025612.png" alt="Datawhale" width="90%">
+    <img src="./images/star-history-2025624.png" alt="Datawhale" width="90%">
 </div>
 
 <div align="center">

docs/README.md

@@ -11,12 +11,6 @@
   <a href="https://swanlab.cn/@kmno4/Happy-LLM/overview"><img src="https://raw.githubusercontent.com/SwanHubX/assets/main/badge1.svg" alt="SwanLab"></a>
 </div>
 
-<div align="center">
-
-[中文](./README.md) | [English](./README_en.md)
-
-</div>
-
 <div align="center">
   <h3>📚 从零开始的大语言模型原理与实践教程</h3>
   <p><em>深入理解 LLM 核心原理，动手实现你的第一个大模型</em></p>
@@ -108,7 +102,7 @@
 ## Star History
 
 <div align='center'>
-    <img src="./images/star-history-2025612.png" alt="Datawhale" width="90%">
+    <img src="./images/star-history-2025624.png" alt="Datawhale" width="90%">
 </div>
 
 <div align="center">