[Web Page] Display the output texts in other format like Markdown at the evaluation page

[tianzhich]

Is your feature request related to a problem? Please describe. No

Describe the solution you'd like I'd like an option that I can see the output texts on eval web page in markdown format. Because the return text I tested is in markdown format, it will be more obvious to compare.

Describe alternatives you've considered I am wondering if it is possible to add an option list that can display output texts in plain text, json, or markdown format.

Additional context