G2 4.x 文档问题统一反馈和吐槽 #2713

• I have searched the issues of this repository and believe that this is not a duplicate.

Reproduction link

https://g2.antv.vision/zh/docs/manual/tutorial/event

Steps to reproduce

直接访问这个文档阅读就会发现很多错误

期望能及时更新文档，让G2设计这么好的图表可视化工具社区快速繁荣起来，

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