update readme

README.md

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-# MetaGPT: The Multi-Agent Framework
-
 <p align="center">
-<a href=""><img src="docs/resources/MetaGPT-new-log.png" alt="MetaGPT logo: Enable GPT to work in a software company, collaborating to tackle more complex tasks." width="150px"></a>
+  <picture>
+    <img alt="MetaGPT Library" src="docs/resources/MetaGPT-new-log-v2.png" height="80" style="max-width: 100%;">
+  </picture>
+  <br/>
+  <br/>
 </p>
 
 <p align="center">
@@ -30,7 +32,7 @@
 
 🚀 Mar. 10, 2025: 🎉 [mgx.dev](https://mgx.dev/) is the #1 Product of the Week on @ProductHunt! 🏆
 
-🚀 Mar. 4, 2025: 🎉 [mgx.dev](https://mgx.dev/) is the #1 Product of the Day on @ProductHunt! 🏆
+🚀 Mar.  4, 2025: 🎉 [mgx.dev](https://mgx.dev/) is the #1 Product of the Day on @ProductHunt! 🏆
 
 🚀 Feb. 19, 2025: Today we are officially launching our natural language programming product: [MGX (MetaGPT X)](https://mgx.dev/) - the world's first AI agent development team. More details on [Twitter](https://x.com/MetaGPT_/status/1892199535130329356).