🐛 fix: Ignore ** in code blocks

[sxjeru]

💻 变更类型 | Change Type

• ✨ feat
• 🐛 fix
• ♻️ refactor
• 💄 style
• 🔨 chore
• 📝 docs

🔀 变更说明 | Description of Change

对 #190 的完善，忽略代码块中的 ** 加粗符号。

📝 补充信息 | Additional Information

fix lobehub/lobe-chat#3512

[lobehubbot]

👍 @sxjeru


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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 0.19%. Comparing base (5851677) to head (26a9d8e).
Report is 130 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##           master    #196      +/-   ##
=========================================
+ Coverage    0.00%   0.19%   +0.19%     
=========================================
  Files         330     368      +38     
  Lines       22325   24669    +2344     
  Branches      330     381      +51     
=========================================
+ Hits            0      47      +47     
- Misses      21995   24255    +2260     
- Partials      330     367      +37     

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[sxjeru]

@arvinxx @canisminor1990 这个 fix 可以合并一下。

在代码场景下这个问题出现的还是比较频繁的。