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

Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Brandon Williams committed Jul 23, 2018 at 10:48 UTC f351b0aba4335ad71f8608b268f2a1d97e1ec008
1 file changed +2 -1
Documentation/technical/pack-protocol.txt
+2 -1
@@ -50,7 +50,8 @@ Each Extra Parameter takes the form of `<key>=<value>` or `<key>`.
50
51 Servers that receive any such Extra Parameters MUST ignore all
52 unrecognized keys. Currently, the only Extra Parameter recognized is
53 -"version=1".
53 +"version" with a value of '1' or '2'. See protocol-v2.txt for more
54 +information on protocol version 2.
55
56 Git Transport
57 -------------