modules/websocket: fixed typo

modules/websocket/ws_frame.c

@@ -31,7 +31,7 @@
 #include "ws_frame.h"
 #include "ws_mod.h"
 
-/*   0                   1                   2                   3
+/*    0                   1                   2                   3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-------+-+-------------+-------------------------------+
      |F|R|R|R| opcode|M| Payload len |    Extended payload length    |