[Info][main] Corrected the errors in the information (#4055)

### What this PR does / why we need it?
Corrected the errors in the information

### Does this PR introduce _any_ user-facing change?
no

### How was this patch tested?
ut

- vLLM version: v0.11.0
- vLLM main:
83f478bb19

Signed-off-by: lilinsiman <lilinsiman@gmail.com>

docs/source/developer_guide/contribution/multi_node_test.md

@@ -51,7 +51,7 @@ From the workflow perspective, we can see how the final test script is executed,
     #  - no headless(have api server)
     decoder_host_index: [1]
 
-    # Add each node's vllm serve cli command just like you runs locally
+    # Add each node's vllm serve cli command just like you run locally
     deployment:
     -
         server_cmd: >