Fix exported comments enforcer in CI

Add comments where missing and fix incorrect comments

Signed-off-by: Derek McGowan <derek@mcg.dev>

remotes/docker/registry.go

@@ -56,6 +56,7 @@ const (
 	// Reserved for future capabilities (i.e. search, catalog, remove)
 )
 
+// Has checks whether the capabilities list has the provide capability
 func (c HostCapabilities) Has(t HostCapabilities) bool {
 	return c&t == t
 }