Update bot name and description in README (#286)

Author: Koimiao-zz

README.md

@@ -26,7 +26,7 @@ memU **continuously captures and understands user intent**. Even without a comma
 
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-## 🤖 [memU bot](https://memu.bot)
+## 🤖 [Moltbot (Clawdbot) Alternative](https://memu.bot)
 
 <img width="100%" src="https://github.com/NevaMind-AI/memU/blob/main/assets/memUbot.png" />