fix: 修正WEB端锚点滚动后位置仍然看不到的问题

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Name	Status	Preview	Comments	Updated (UTC)
dumi-theme-antd-style	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 4, 2023 7:41am

[arvinxx]

赞！👍🏻

close #19

[github-actions[bot]]

:tada: This PR is included in version 0.21.1 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: