[NPU] Upgrade to v0.18.0

Signed-off-by: gcanlin <canlinguosdu@gmail.com>

docs/getting_started/installation/npu/npu.inc.md

@@ -68,18 +68,18 @@ We are keeping [issue #886](https://github.com/vllm-project/vllm-omni/issues/886
 You can also build vLLM-Omni from the latest main branch if you want to use the latest features or bug fixes. (But sometimes it will break for a while. You can check [issue #886](https://github.com/vllm-project/vllm-omni/issues/886) for the status of the latest commit of vLLM-Omni main branch on NPU.)
 
 ```bash
-# Pin vLLM version to 0.17.0
+# Pin vLLM version to 0.18.0
 cd /vllm-workspace/vllm
 git pull origin main
 git fetch origin --tags
-git checkout v0.17.0
+git checkout v0.18.0
 VLLM_TARGET_DEVICE=empty pip install -v -e .
 
 # Because vllm-ascend has not yet entered continuous development and has not been officially released, we need to pin it to a specific commit. Please note that this commit may change over time.
 cd /vllm-workspace/vllm-ascend
 git pull origin main
 git fetch origin --tags
-git checkout v0.17.0
+git checkout 1e05c4908f31737bc4eef865a9f351d030a77c9d
 pip install -v -e .
 
 # Install vLLM-Omni from the latest main branch