feat(Timeline): Description 内容是否可以增加html元素显示

[javazfj]

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Description 内容是否可以增加html元素显示

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Description 内容是否可以增加html元素显示

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[bb-auto]

@javazfj Thank you for contacting us. We will give feedback later.

[ArgoZhang]

@javazfj 增加一个 DescriptionTemplate 可以自己定义，这样自由度就非常高了

[javazfj]

好主意 @ArgoZhang

[ArgoZhang]

@javazfj 发布 9.2.7-beta04

[javazfj]

牛逼牛逼 @ArgoZhang