[Doc] Refactor the DeepSeek-V3.2-Exp tutorial. (#3871)

### What this PR does / why we need it?
Refactor the DeepSeek-V3.2-Exp tutorial.

- vLLM version: v0.11.0
- vLLM main:
83f478bb19

---------

Signed-off-by: menogrey <1299267905@qq.com>

docs/source/conf.py

@@ -80,6 +80,9 @@ myst_substitutions = {
     'ci_vllm_version': 'v0.11.0',
 }
 
+# For cross-file header anchors
+myst_heading_anchors = 5
+
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']