Update compilation serial

src/serial/serial.tex

@@ -152,7 +152,7 @@
 
 \begin{frame}[t,fragile]
   \frametitle{Compilation}
-  \framesubtitle{bilan and header files}
+  \framesubtitle{Summary and header files}
    To sum up, to compile we need typically the following informations:
   \begin{itemize}
     \item The name of the source code file(s)