fix "jetson.jpg" to "tx2.png" figure path

presentation/slide/main.tex

@@ -51,7 +51,7 @@
             \flushright
             \begin{figure}
               \centering
-              \includegraphics[width=1\linewidth]{figures/jetson.jpg}              
+              \includegraphics[width=1\linewidth]{figures/tx2.png}  %fix "jetson.jpg" to "tx2.png"          
               \caption{Jetson TX2}
             \end{figure}