[doc][main] Correct mistakes in doc (#4945)

### What this PR does / why we need it?
Correct mistakes in doc

- vLLM version: v0.12.0
- vLLM main:
ad32e3e19c

---------

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

docs/source/user_guide/support_matrix/supported_features.md

@@ -2,6 +2,8 @@
 
 The feature support principle of vLLM Ascend is: **aligned with the vLLM**. We are also actively collaborating with the community to accelerate support.
 
+Functional call: https://docs.vllm.ai/en/latest/features/tool_calling/
+
 You can check the [support status of vLLM V1 Engine][v1_user_guide]. Below is the feature support status of vLLM Ascend:
 
 | Feature                       |      Status    | Next Step                                                              |