docs: update README (#2878)

.github/workflows/release-docs.yml

@@ -49,7 +49,7 @@ jobs:
           cd _build/html
 
           git clone https://$GITHUB_TOKEN@github.com/sgl-project/sgl-project.github.io.git ../sgl-project.github.io --depth 1
-          find ../sgl-project.github.io/ -mindepth 1 -not -path "../sgl-project.github.io/.git*" -not -name CNAME -delete
+          find ../sgl-project.github.io/ -mindepth 1 -not -path "../sgl-project.github.io/.git*" -not -name CNAME -not -name ".jekyll" -not -name ".nojekyll" -delete
           cp -r * ../sgl-project.github.io
           cp ../../README.md ../sgl-project.github.io/README.md
           cd ../sgl-project.github.io

benchmark/deepseek_v3/README.md

@@ -60,7 +60,9 @@ print(response)
 ```
 
 ### Example: Serving with two H20*8 nodes
-For example, there are two H20 nodes, each with 8 GPUs. The first node's IP is `10.0.0.1`, and the second node's IP is `10.0.0.2`.
+For example, there are two H20 nodes, each with 8 GPUs. The first node's IP is `10.0.0.1`, and the second node's IP is `10.0.0.2`. Please **use the first node's IP** for both commands.
+
+If the command fails, try setting the `GLOO_SOCKET_IFNAME` parameter. For more information, see [Common Environment Variables](https://pytorch.org/docs/stable/distributed.html#common-environment-variables).
 
 ```bash
 # node 1