[Docs][Model] Support Qwen3-VL-Embedding & Qwen3-VL-Reranker (#6034)

### What this PR does / why we need it?

Add docs for Qwen3-VL-Embedding & Qwen3-VL-Reranker.

- vLLM version: v0.13.0
- vLLM main:
2c24bc6996

---------

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

docs/source/tutorials/index.md

@@ -13,7 +13,9 @@ Qwen3-VL-30B-A3B-Instruct.md
 Qwen3-VL-235B-A22B-Instruct.md
 Qwen3-Coder-30B-A3B.md
 Qwen3_embedding.md
+Qwen3-VL-Embedding.md
 Qwen3_reranker.md
+Qwen3-VL-Reranker.md
 Qwen3-8B-W4A8.md
 Qwen3-32B-W4A4.md
 Qwen3-Next.md