[report]: Simplified Backend Architecture diagram

report/report.tex

@@ -200,8 +200,8 @@ Other constraints include:
 \chapter{Backend Design \& Implementation}
 \begin{figure}[H]
     \centering
-    \includegraphics[width=\textwidth]{./images/diagram_all.png}
-    \caption{Backend architecture}
+    \includegraphics[width=\textwidth]{./images/overall_backend.png}
+    \caption{High-level backend architecture}
 \end{figure}
 
 \section{Database Design}