bip155: mark torv2 as deprecated

Author: brunoerg

bip-0155.mediawiki

@@ -101,7 +101,7 @@ The list of reserved network IDs is as follows:
 | <code>0x03</code>
 | <code>TORV2</code>
 | 10
-| Tor v2 hidden service address
+| Tor v2 hidden service address (**Tor v2 is no longer operational**; clients **MUST NOT** gossip or relay Tor v2 addresses and **MUST** ignore them on receive).
 |-
 | <code>0x04</code>
 | <code>TORV3</code>
@@ -160,7 +160,7 @@ Clients MUST send Tor hidden service addresses with this network ID, with the 80
 
 Clients SHOULD ignore OnionCat (<code>fd87:d87e:eb43::/48</code>) addresses on receive if they come with the <code>IPV6</code> network ID.
 
-==Appendix B: Tor v3 address encoding==
+==Appendix B: Tor v3 address encoding (for historical context, as Tor v2 is no longer operational)==
 
 According to the spec <ref>[https://gitweb.torproject.org/torspec.git/tree/rend-spec-v3.txt Tor Rendezvous Specification - Version 3: Encoding onion addresses]</ref>, next-gen <code>.onion</code> addresses are encoded as follows:
 <pre>