Prop 111: SipHash keys little endian

i2p2www/spec/proposals/111-ntcp-2.rst

@@ -1565,15 +1565,15 @@ ck = from handshake phase
   sip_master = (all zeros)
 
   sipkeys_ab = HMAC-SHA256(temp_key, byte(0x01)).
-  sipk1_ab = sipkeys_ab[0:7], big endian
-  sipk2_ab = sipkeys_ab[8:15], big endian
+  sipk1_ab = sipkeys_ab[0:7], little endian
+  sipk2_ab = sipkeys_ab[8:15], little endian
   sipiv_ab = sipkeys_ab[16:23]
 
   Bob to Alice SipHash k1, k2, IV:
 
   sipkeys_ba = HMAC-SHA256(temp_key, sipkeys_ab || byte(0x02)).
-  sipk1_ba = sipkeys_ba[0:7], big endian
-  sipk2_ba = sipkeys_ba[8:15], big endian
+  sipk1_ba = sipkeys_ba[0:7], little endian
+  sipk2_ba = sipkeys_ba[8:15], little endian
   sipiv_ba = sipkeys_ba[16:23]
 
   // overwrite the temp_key in memory, no longer needed