[doc] Fold long code blocks to improve readability (#19926)

Signed-off-by: reidliu41 <reid201711@gmail.com>
Co-authored-by: reidliu41 <reid201711@gmail.com>

docs/deployment/nginx.md

@@ -36,23 +36,25 @@ docker build . -f Dockerfile.nginx --tag nginx-lb
 
 Create a file named `nginx_conf/nginx.conf`. Note that you can add as many servers as you'd like. In the below example we'll start with two. To add more, add another `server vllmN:8000 max_fails=3 fail_timeout=10000s;` entry to `upstream backend`.
 
-```console
-upstream backend {
-    least_conn;
-    server vllm0:8000 max_fails=3 fail_timeout=10000s;
-    server vllm1:8000 max_fails=3 fail_timeout=10000s;
-}
-server {
-    listen 80;
-    location / {
-        proxy_pass http://backend;
-        proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
+??? Config
+
+    ```console
+    upstream backend {
+        least_conn;
+        server vllm0:8000 max_fails=3 fail_timeout=10000s;
+        server vllm1:8000 max_fails=3 fail_timeout=10000s;
     }
-}
-```
+    server {
+        listen 80;
+        location / {
+            proxy_pass http://backend;
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+        }
+    }
+    ```
 
 [](){ #nginxloadbalancer-nginx-vllm-container }
 
@@ -93,30 +95,32 @@ Notes:
 - The below example assumes GPU backend used. If you are using CPU backend, remove `--gpus device=ID`, add `VLLM_CPU_KVCACHE_SPACE` and `VLLM_CPU_OMP_THREADS_BIND` environment variables to the docker run command.
 - Adjust the model name that you want to use in your vLLM servers if you don't want to use `Llama-2-7b-chat-hf`.
 
-```console
-mkdir -p ~/.cache/huggingface/hub/
-hf_cache_dir=~/.cache/huggingface/
-docker run \
-    -itd \
-    --ipc host \
-    --network vllm_nginx \
-    --gpus device=0 \
-    --shm-size=10.24gb \
-    -v $hf_cache_dir:/root/.cache/huggingface/ \
-    -p 8081:8000 \
-    --name vllm0 vllm \
-    --model meta-llama/Llama-2-7b-chat-hf
-docker run \
-    -itd \
-    --ipc host \
-    --network vllm_nginx \
-    --gpus device=1 \
-    --shm-size=10.24gb \
-    -v $hf_cache_dir:/root/.cache/huggingface/ \
-    -p 8082:8000 \
-    --name vllm1 vllm \
-    --model meta-llama/Llama-2-7b-chat-hf
-```
+??? Commands
+
+    ```console
+    mkdir -p ~/.cache/huggingface/hub/
+    hf_cache_dir=~/.cache/huggingface/
+    docker run \
+        -itd \
+        --ipc host \
+        --network vllm_nginx \
+        --gpus device=0 \
+        --shm-size=10.24gb \
+        -v $hf_cache_dir:/root/.cache/huggingface/ \
+        -p 8081:8000 \
+        --name vllm0 vllm \
+        --model meta-llama/Llama-2-7b-chat-hf
+    docker run \
+        -itd \
+        --ipc host \
+        --network vllm_nginx \
+        --gpus device=1 \
+        --shm-size=10.24gb \
+        -v $hf_cache_dir:/root/.cache/huggingface/ \
+        -p 8082:8000 \
+        --name vllm1 vllm \
+        --model meta-llama/Llama-2-7b-chat-hf
+    ```
 
 !!! note
     If you are behind proxy, you can pass the proxy settings to the docker run command via `-e http_proxy=$http_proxy -e https_proxy=$https_proxy`.