docs: Add notes in the scroller plugin doc

[JackyChen02]

Description
在 文档-插件-滚动画布 处添加了与画布panning配置冲突的相关说明

[x6-bot]

👋 @JackyChen02

💖 Thanks for opening this pull request! 💖

Please follow the contributing guidelines. And we use semantic commit messages to streamline the release process.

Examples of commit messages with semantic prefixes:

• fix: don't overwrite prevent_default if default wasn't prevented
• feat: add graph.scale() method
• docs: graph.getShortestPath is now available

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• Run npm run lint locally to catch formatting errors earlier.
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We get a lot of pull requests on this repo, so please be patient and we will get back to you as soon as we can.

[x6-bot]

👋 @JackyChen02

Congrats on merging your first pull request! 🎉🎉🎉