Add note for Ascend HDK version (#2765)

### What this PR does / why we need it?
Add note for Ascend HDK version

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

### How was this patch tested?
CI passed

- vLLM version: v0.10.1.1
- vLLM main:
e599e2c65e

Signed-off-by: Yikun Jiang <yikunkero@gmail.com>

README.md

@@ -42,7 +42,7 @@ By using vLLM Ascend plugin, popular open-source models, including Transformer-l
 - OS: Linux
 - Software:
   * Python >= 3.9, < 3.12
-  * CANN >= 8.2.rc1
+  * CANN >= 8.2.rc1 (Ascend HDK version refers to [here](https://www.hiascend.com/document/detail/zh/canncommercial/82RC1/releasenote/releasenote_0000.html))
   * PyTorch >= 2.7.1, torch-npu >= 2.7.1.dev20250724
   * vLLM (the same version as vllm-ascend)
 

README.zh.md

@@ -43,7 +43,7 @@ vLLM 昇腾插件 (`vllm-ascend`) 是一个由社区维护的让vLLM在Ascend NP
 - 操作系统：Linux
 - 软件：
   * Python >= 3.9, < 3.12
-  * CANN >= 8.2.rc1
+  * CANN >= 8.2.rc1 (Ascend HDK 版本参考[这里](https://www.hiascend.com/document/detail/zh/canncommercial/82RC1/releasenote/releasenote_0000.html))
   * PyTorch >= 2.7.1, torch-npu >= 2.7.1.dev20250724
   * vLLM (与vllm-ascend版本一致)
 

docs/source/installation.md

@@ -11,6 +11,7 @@ This document describes how to install vllm-ascend manually.
 
     | Software      | Supported version                | Note                                      |
     |---------------|----------------------------------|-------------------------------------------|
+    | Ascend HDK    | Refer to [here](https://www.hiascend.com/document/detail/zh/canncommercial/82RC1/releasenote/releasenote_0000.html) | Required for CANN |
     | CANN          | >= 8.2.RC1                       | Required for vllm-ascend and torch-npu    |
     | torch-npu     | >= 2.7.1.dev20250724             | Required for vllm-ascend, No need to install manually, it will be auto installed in below steps |
     | torch         | >= 2.7.1                         | Required for torch-npu and vllm           |