docs: add DPA3 cyclohexane distillation tutorial (deepmodeling#5564)

## Summary

- add a getting-started notebook for distilling a cyclohexane Student
potential from the DPA3 pretrained Teacher model
- add an Open in Bohrium badge for
https://ustc.bohrium.com/notebooks/99176325231/
- add the notebook to the getting-started toctree and use internal
documentation links for ASE and dpdata references

## Checks

- Parsed the notebook JSON successfully
- Verified there are no CJK characters in the notebook
- Verified source markdown no longer uses external DeePMD documentation
URLs for the ASE/dpdata references
- Parsed all plain Python code cells with `ast.parse`
- Ran `git diff --check`

Authored by OpenClaw (model: custom-chat-jinzhezeng-group/gpt-5.5)


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Documentation**
* Added a new *cyclohexane distillation* page to the getting-started
guide, expanding the DeePMD-kit “typical procedure” quick-start options
with an additional tutorial.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: njzjz-bot

doc/getting-started/dpa3_cyclohexane_distillation.ipynb

@@ -9,3 +9,4 @@ In this text, we will call the deep neural network that is used to represent the
 
    install
    quick_start
+   dpa3_cyclohexane_distillation