need rc3_21 slug in inter-assembly-links

lib/LintConfig.hs

@@ -137,7 +137,7 @@ patchConfig config p = config'
         assemblysubst = \case
           DomainSubstitution subst scope ->
             DomainSubstitution (subst <> M.fromList generated) scope
-            where generated = (\slug -> (slug, "/@/"<>slug)) <$> configAssemblies config'
+            where generated = (\slug -> (slug, "/@/rc3_21/"<>slug)) <$> configAssemblies config'
           other -> other
 
 instance (FromJSON (LintConfig a)) => Argument (LintConfig a) where