[Feature Request]: Supports citing other types of file besides PDF.

[1430231938]

Is there an existing issue for the same feature request?

• I have checked the existing issues.

Is your feature request related to a problem?

在chat模块中提问，得到的答案中会有答案的来源文件。这个来源文件目前仅支持PDF格式的文件预览，其余格式会跳转到一个空白的预览页面。

Describe the feature you'd like

补充一些其它在知识库中可被解析的格式预览，例如：json、doc、Paper等。

Describe implementation you've considered

No response

Documentation, adoption, use case

No response

Additional information

No response