fix(router): 修复 CSS 单行注释语法问题

[anyesu]

这个 PR 做了什么? (简要描述所做更改)

这个 PR 是什么类型? (至少选择一个)

• 错误修复(Bugfix) issue: fix #

这个 PR 涉及以下平台:

• Web 平台（H5）

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 58.64%. Comparing base (1653ac1) to head (891c23c).

Additional details and impacted files

@@           Coverage Diff            @@
##             main   #15737    +/-   ##
========================================
  Coverage   58.64%   58.64%            
========================================
  Files         500      500            
  Lines       21936    21936            
  Branches     5510     5533    +23     
========================================
  Hits        12865    12865            
+ Misses       8115     8011   -104     
- Partials      956     1060   +104     

Flag	Coverage Δ
taro-cli	75.00% <ø> (ø)
taro-runner	54.00% <ø> (ø)
taro-runtime	57.47% <ø> (-21.93%)	⬇️
taro-web	44.71% <0.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
packages/taro-router/src/style.ts	25.00% <0.00%> (ø)

... and 42 files with indirect coverage changes

[ZakaryCode]

感谢贡献

[ZakaryCode]

感谢贡献