Boot time slides: refering to BusyBox init

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>

slides/boot-time-init-scripts/boot-time-init-scripts.tex

@@ -92,7 +92,7 @@ \section{Optimizing init scripts and system startup}
 \frametitle{Init optimizations}
 Goal to start your application as soon as possible after all the dependencies are started:
 \begin{itemize}
-	\item Depends on your \code{init} program. Here we are assuming sysV
+	\item Depends on your \code{init} program. Here we are assuming BusyBox
 	      \code{init} scripts.
 	\item \code{init} scripts run in alphanumeric order and start with
 	      a letter (K for stop ({\bf k}ill) and S for {\bf s}tart).