[doc] update recommedation system urls (#1725)

README-zh-Hans.md

@@ -150,7 +150,7 @@ Colossal-AI 为您提供了一系列并行组件。我们的目标是让您的
 
 
 ### 推荐系统模型
-- [Cached Embedding](https://github.com/hpcaitech/FreqCacheEmbedding), 使用软件Cache实现Embeddings，用更少GPU显存训练更大的模型。
+- [Cached Embedding](https://github.com/hpcaitech/CachedEmbedding), 使用软件Cache实现Embeddings，用更少GPU显存训练更大的模型。
 
 
 <p align="right">(<a href="#top">返回顶端</a>)</p>

README.md

@@ -154,7 +154,7 @@ distributed training and inference in a few lines.
 Please visit our [documentation](https://www.colossalai.org/) and [examples](https://github.com/hpcaitech/ColossalAI-Examples) for more details.
 
 ### Recommendation System Models
-- [Cached Embedding](https://github.com/hpcaitech/FreqCacheEmbedding), utilize software cache to train larger embedding tables with a smaller GPU memory budget.
+- [Cached Embedding](https://github.com/hpcaitech/CachedEmbedding), utilize software cache to train larger embedding tables with a smaller GPU memory budget.
 
 <p align="right">(<a href="#top">back to top</a>)</p>