Dead link "Pulp Plugin API"
Documentation, Easy Fix
This section include a link to "Pulp Plugin API", which is a dead link. https://docs.pulpproject.org/en/3.0/pulpcore-plugin/nightly/
This link should be: https://docs.pulpproject.org/en/pulpcore-plugin/nightly/
Fix dead-link in docs
closes: #4569 https://pulp.plan.io/issues/4569
Signed-off-by: Pavel Picka email@example.com