fix(render-engine): optimize underline postion

[Jocs]

close #1860

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 15 lines in your changes are missing coverage. Please review.

Project coverage is 29.25%. Comparing base (a98e8ab) to head (2428d80).
Report is 2 commits behind head on dev.

Files	Patch %	Lines
...gine-render/src/components/docs/extensions/line.ts	0.00%	11 Missing ⚠️
.../engine-render/src/components/docs/layout/tools.ts	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #2164      +/-   ##
==========================================
- Coverage   29.26%   29.25%   -0.02%     
==========================================
  Files        1516     1516              
  Lines       76736    76737       +1     
  Branches    15942    15940       -2     
==========================================
- Hits        22457    22447      -10     
- Misses      54279    54290      +11     

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[github-actions]

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📑 Examples	📚 Storybook
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[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