[Improvement] add related document source URI for graph search

[nayutah]

Is your improvement request related to a problem? Please describe.
1, show the source uri at the right side box
2, when click the uri, shows the content of the document

If this is a new function, please describe the motivation and goals.
A clear and concise description of why you want to happen, link the design doc if possible

Describe the solution you'd like
A clear and concise description of what you want to happen.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or functions you've considered.

Additional context
Add any other context or screenshots about the improvement request here.

[github-actions]

This issue has been marked as stale because it has been open for 30 days with no activity