At the moment the exact version is specified when navigatin to an Integration in Fleet, for example <host>:<port>/app/fleet#/integrations/detail/apm-0.1.0-dev.5/overview.

When linking to an Integration from some other Kibana app, this requires to know about the Integration versions. It would be easier if a URL without the version would just show the installed, or if not installed the latest available, Integration.
Example: <host>:<port>/app/fleet#/integrations/detail/apm/overview.

Edit: this issue is currently blocked until we figure out plans for Integration UI and capacity for that work in 7.14.