doc: hash-iter missing in diagram.

* txr.1: Add hash-iter into type hierarchy diagram
under [cobj types].

1 files changed, 2 insertions, 0 deletions

diff --git a/txr.1 b/txr.1
index 0c551288..563481db 100644
--- a/txr.1
+++ b/txr.1
@@ -17311,6 +17311,8 @@ brackets indicate a plurality of types which are not listed by name:
 .verb
   t ----+--- [cobj types] ---+--- hash
         |                    |
+        |                    +--- hash-iter
+        |                    |
         |                    +--- stream
         |                    |
         |                    +--- random-state