Fix product stage group dashboard links
Example: https://dashboards.gitlab.net/dashboard/snapshot/0EvJ7dk8WMsU1hVaLjfu3KS7LoN4I1bL?orgId=1
These links now work:
Example: https://dashboards.gitlab.net/dashboard/snapshot/0EvJ7dk8WMsU1hVaLjfu3KS7LoN4I1bL?orgId=1
These links now work: