pack-protocol: mention and point to docs for protocol v2

bmwill · gitster · commit f351b0aba433 · 2018-07-24T12:59:51.000-07:00
Signed-off-by: Brandon Williams &lt;bmwill@google.com&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git a/Documentation/technical/pack-protocol.txt b/Documentation/technical/pack-protocol.txt
@@ -50,7 +50,8 @@ Each Extra Parameter takes the form of `<key>=<value>` or `<key>`.
 
 Servers that receive any such Extra Parameters MUST ignore all
 unrecognized keys. Currently, the only Extra Parameter recognized is
-"version=1".
+"version" with a value of '1' or '2'.  See protocol-v2.txt for more
+information on protocol version 2.
 
 Git Transport
 -------------
