refactor: 补充文档 --story=130216170

[dengyh]

No description provided.

[github-actions]

代码审查总结

本 PR 为 4 个 API 接口添加了 custom_span_attributes 参数的文档。代码实现已存在且正确，但文档存在以下问题：

🚨 关键问题

1. 参数验证缺失：文档未说明参数值的类型和格式验证规则
2. 示例不一致：不同文档中的示例字段名和值类型不统一，可能误导用户
3. 注意事项描述不准确：关于"优先级高于默认属性"的表述容易引起误解

✅ 正确之处

• 参数功能描述准确
• 使用场景说明清晰
• 代码实现与文档一致

建议后续迭代时补充参数验证规则和统一示例格式。

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (master@17c0964). Learn more about missing BASE report.

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #596   +/-   ##
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  Coverage          ?   81.39%           
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  Files             ?      239           
  Lines             ?    13564           
  Branches          ?        0           
=========================================
  Hits              ?    11041           
  Misses            ?     2523           
  Partials          ?        0           

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