fix project architecture

src/02_product-documentation/architecture/project-architecture.tex

 \section{Project Architecture}
-    This section provides an overview of the SmartEating project structure and the structure of the chatbot project that it contains.
+    This section provides an overview of the Smart Eating project structure and the structure of the chatbot project that it contains.
 
-    \subsection{SmartEating Project Structure}
+    \subsection{Smart Eating Project Structure}
         \begin{figure}[H]
             \centering
             \includegraphics[width=0.55\linewidth]{diagrams/out/projects.png}
-            \caption{SmartEating project structure}
+            \caption{Smart Eating project structure}
         \end{figure}
 
-        The SmartEating project is a collection of multiple independent applications.
+        The Smart Eating project is a collection of multiple independent applications.
         Each application has its own directory and can be built independently.
         The diffrent applications are interconnected through the use of APIs.