### What this PR does / why we need it?
Update DOC. Guide users to run LoRA with ACLGraph.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
No.
- vLLM version: v0.10.0
- vLLM main:
de7b67a023
---------
Signed-off-by: paulyu12 <507435917@qq.com>
Add user doc index to make the user guide more clear
- vLLM version: v0.9.1
- vLLM main:
49e8c7ea25
Signed-off-by: wangxiyuan <wangxiyuan1007@gmail.com>
