Update smp-console.md: Length field should include length of CRC16.

The length of the packet is the length of the unencoded body plus the final CRC (crc-16 so the length includes the two bytes of CRC).
diff --git a/transport/smp-console.md b/transport/smp-console.md
index d9804f9..0b12f3c 100644
--- a/transport/smp-console.md
+++ b/transport/smp-console.md
@@ -39,7 +39,7 @@
 | ----- | ----------- |
 | 0x06 0x09 | Byte pair indicating the start of a packet. |
 | 0x04 0x14 | Byte pair indicating the start of a continuation frame. |
-| Packet length | The combined total length of the *unencoded* body. |
+| Packet length | The combined total length of the *unencoded* body plus the final CRC (2 bytes). Length is in Big-Endian format. |
 | Body | The actual SMP data (i.e., 8-byte header and CBOR key-value map). |
 | CRC16 | A CRC16 of the *unencoded* body of the entire packet.  This field is only present in the final frame of a packet. |
 | Newline | A 0x0a byte; terminates a frame. |