[PATCH/trivial] Fix numbering in PROTOCOL.mux

[Bert Wesarg]

diff --git i/PROTOCOL.mux w/PROTOCOL.mux
index 05bb146..b53af19 100644 PROTOCOL.mux
--- i/PROTOCOL.mux
+++ w/PROTOCOL.mux
@@ -180,7 +180,7 @@ The MUX_S_PERMISSION_DENIED and MUX_S_FAILURE
include a reason:
 	uint32	client request id
 	string	reason

-9. Protocol numbers
+10. Protocol numbers

 #define MUX_MSG_HELLO		0x00000001
 #define MUX_C_NEW_SESSION	0x10000002