[Doc][310P] 310P includes a new Qwen 3.5-Dense support documentation (vllm-project#12077)

### What this PR does / why we need it?
Documentation Update: Renamed the tutorial document to
'Qwen3.5-Dense-Qwen3.6-Dense.md' and updated it to include support for
Qwen3.5-2B, 4B, and 9B models.
Atlas Inference Support: Added comprehensive deployment instructions,
startup commands, and configuration guidelines for Atlas inference
products and Atlas 200I Pro.
Parameter Tuning: Included specific warnings and recommendations for
memory management (OOM prevention) and parameter configuration when
deploying on Atlas inference hardware.

- vLLM version: v0.24.0
- vLLM main:
vllm-project/vllm@85c09e9
---------
Signed-off-by: YangShuai52 <shuaiyang047@163.com>

Author: YangShuai52

docs/hooks/nav_titles.py

@@ -163,6 +163,10 @@
         "en": "Qwen3.5-27B & Qwen3.6-27B",
         "zh": "Qwen3.5-27B & Qwen3.6-27B",
     },
+    "tutorials/models/Qwen3.5-Dense.md": {
+        "en": "Qwen3.5-Dense (2B/4B/9B)",
+        "zh": "Qwen3.5-Dense (2B/4B/9B)",
+    },
     "tutorials/models/Qwen3.5-397B-A17B.md": {"en": "Qwen3.5-397B-A17B", "zh": "Qwen3.5-397B-A17B"},
     "tutorials/models/Qwen3.6-35B-A3B.md": {"en": "Qwen3.6-35B-A3B", "zh": "Qwen3.6-35B-A3B"},
     "tutorials/models/Qwen3_embedding.md": {"en": "Qwen3 Embedding", "zh": "Qwen3 Embedding"},