Allow for link to edit from SVG embed

[gioragutt]

It would be nice if the SVG embed would also include a clickable link that would go to the edit version of the diagram.

So if we take the example on https://mermaid.ink/,

The embed link

Would have the diagram show a link (at one of the corners or as the title or something), that would link the respective edit link.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[gioragutt]

Bump :)

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[gioragutt]

not stale

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.