feat(docs): support background color in doc

[Jocs]

close #975

[github-actions]

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[codecov]

Codecov Report

Attention: Patch coverage is 19.35484% with 25 lines in your changes are missing coverage. Please review.

Project coverage is 29.89%. Comparing base (bd85759) to head (ebeee32).

Files	Patch %	Lines
packages/docs-ui/src/controllers/menu/menu.ts	0.00%	14 Missing ⚠️
...ocs/src/commands/commands/inline-format.command.ts	35.29%	11 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #1846      +/-   ##
==========================================
- Coverage   29.90%   29.89%   -0.01%     
==========================================
  Files        1162     1162              
  Lines       62961    62991      +30     
  Branches    13232    13236       +4     
==========================================
+ Hits        18826    18831       +5     
- Misses      44135    44160      +25     

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