docs/community_tools.md: add paragraph about jj-fzf

Signed-off-by: Tim Janik <[email protected]>

docs/community_tools.md

@@ -25,6 +25,14 @@ alternative to the default `:builtin` diff-editor.
 
 Find it [here][hunk.nvim].
 
+## JJ-FZF
+
+Centered around the `jj log` graph view, jj-fzf provides previews of diffs, the
+evolution-log, browses the op log and offers a large number of key bindings for
+commonly used `jj` operations from rebase to undo, and helps with divergent commits.
+
+Find it [here][jj-fzf].
+
 ## JJ TUI
 
 This is TUI for Jujutsu built in Ocaml, it is unopiniated and its creator is
@@ -63,6 +71,7 @@ You can find other community contributed tools and integrations in our
 [diffedit3]: https://github.com/ilyagr/diffedit3
 [gg]: https://github.com/gulbanana/gg
 [hunk.nvim]: https://github.com/julienvincent/hunk.nvim
+[jj-fzf]: https://github.com/tim-janik/jj-fzf
 [jj_tui]: https://github.com/faldor20/jj_tui
 [lazyjj]: https://github.com/Cretezy/lazyjj
 [vjj]: https://github.com/noahmayr/vjj