fix(render-engine): optimize underline postion

[Jocs]

close #1860

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 31.08%. Comparing base (9edf924) to head (d020e40).

Files	Patch %	Lines
.../engine-render/src/components/docs/layout/tools.ts	0.00%	4 Missing ⚠️
...gine-render/src/components/docs/extensions/line.ts	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #2164      +/-   ##
==========================================
- Coverage   31.08%   31.08%   -0.01%     
==========================================
  Files        1209     1209              
  Lines       66296    66299       +3     
  Branches    14026    14025       -1     
==========================================
  Hits        20607    20607              
- Misses      45689    45692       +3     

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[github-actions]

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📑 Examples	📚 Storybook
🔗 Preview link	🔗 Preview link

[oumomomo]

上标的下划线位置太下

[univer-bot]

Bot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

The superscript and underline are too far down