[Bug] Exporting link previews should export to []() format

### Bug Description

When exporting a document to markdown that contains link previews, they should be exported to the Markdown format ```[Page title](https://link.com/image.png)```

### How to Reproduce

Export a document containing link previews to Markdown

### Expected Behavior

The links are transformed to proper markdown format

### Plugin

link_preview

### OS/Platform

All

### Plugin version

latest

### Screenshots

_No response_

### Additional Context

_No response_