Backport PR scverse#1122: update r notebook

adamgayoso · meeseeksmachine · commit 9f3a1175e53e · 2021-09-02T04:01:49.000Z
diff --git a/docs/user_guide/notebooks b/docs/user_guide/notebooks
@@ -1 +1 @@
-Subproject commit c8fe096b001343a43b05f76e23843ff986e575f5
+Subproject commit be33756713d89ba763c1c49c0fa3bf15efc5cc86
