fix bbb url resolution

lib/Properties.hs

@@ -371,7 +371,7 @@ checkTileLayerProperty p@(Property name _value) = case name of
           assemblies <- lintConfig configAssemblies
           if assembly_slug `elem` assemblies
             then do
-              let link = "https://rc3.world/assembly/"<>assembly_slug<>"/bbb"<>room_slug
+              let link = "https://rc3.world/2021/room/"<>room_slug
               dependsOn (Link link)
               setProperty "openWebsite" link
               setProperty "silent" (BoolProp True)