types: mention that TLV-TYPE 31 used to be allocated
Amends commit 9fba5f4c46b97eeaf22f5e2c33e6368a51272255
Change-Id: If43f60b9e9077e95ca6bd79c32753c52873d5ef2
diff --git a/types.rst b/types.rst
index fbbc715..ded24c7 100644
--- a/types.rst
+++ b/types.rst
@@ -136,6 +136,8 @@
+----------------+-----------------------------------------------------------+
| 19 | Reserved, formerly *Any* |
+----------------+-----------------------------------------------------------+
+| 31 | Reserved, formerly *Delegation* |
++----------------+-----------------------------------------------------------+
| [80, 100] | Reserved for assignments related to local-link data |
| | processing, e.g., NDNLP_ (1-byte encoding) |
+----------------+-----------------------------------------------------------+