[Docs] remove Ascend word to make docs general (vllm-project#190)

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

Author: gcanlin

docs/models/supported_models.md

@@ -23,7 +23,7 @@ th {
 |`ZImagePipeline` | Z-Image | `Tongyi-MAI/Z-Image-Turbo` |
 
 
-## List of Supported Models for Ascend NPU
+## List of Supported Models for NPU
 
 <style>
 th {