feeds: link to Wikipedia podcasts lists

hosts/common/feeds.nix

@@ -1,14 +1,9 @@
 # where to find good stuff?
 # - universal search/directory: <https://podcastindex.org>
+# - list of lists: <https://en.wikipedia.org/wiki/Category:Lists_of_podcasts>
 # - podcasts w/ a community: <https://lemmyverse.net/communities?query=podcast>
 # - podcast rec thread: <https://lemmy.ml/post/1565858>
 #
-# candidates:
-# - The Nonlinear Library (podcast): <https://forum.effectivealtruism.org/posts/JTZTBienqWEAjGDRv/listen-to-more-ea-content-with-the-nonlinear-library>
-#   - has ~10 posts per day, text-to-speech; i would need better tagging before adding this
-# - <https://www.metaculus.com/questions/11102/introducing-the-metaculus-journal-podcast/>
-#   - dead since 2022/10 - 2023/03
-
 { lib, sane-data, ... }:
 let
   hourly = { freq = "hourly"; };