Add router deep dive thread link

Author: ByronHsu

blog/2024-12-04-sglang-v0-4.md

@@ -106,7 +106,7 @@ python -m sglang.launch_server \
   --dp-size 8
 ````
 
-Learn more by reading the [code](https://github.com/sgl-project/sglang/tree/main/rust). There is also a related paper (with a different design and implementation), [Preble](https://arxiv.org/abs/2407.00023), which is also built on top of SGLang.
+Learn more by reading the [deep dive thread](https://x.com/hsu_byron/status/1864449841239347341). There is also a related paper (with a different design and implementation), [Preble](https://arxiv.org/abs/2407.00023), which is also built on top of SGLang.
 
 ## Data Parallelism Attention For DeepSeek Models