transport/serial: fix typo in encoding example (#135)

Author: coderkalyan

specification/transport/serial/serial.tex

@@ -225,7 +225,7 @@ \subsection{Examples}
     \begin{verbatim}
 00
 09
-01 04 d2 04 ff ff e1 10 01 01 01 01 01 01 01 01 01 01 02 80 01 03 50 79
+01 04 e1 10 ff ff d2 04 01 01 01 01 01 01 01 01 01 01 02 80 01 03 93 70
 01 01 01 01
 00
     \end{verbatim}