replace quantum dots with silicon spin qubits in figure dzxc-arch-diagram

NEWPROPOSAL/FULLPROP.tex

@@ -186,7 +186,7 @@ techniques which may be used by a compiler to translate high-
     \vspace*{-10mm}%
 %    \texttt{\color{red!70!black} [Placeholder?]} \\[-5ex]
     \hspace*{-4mm}%
-    \cgraph[0.7375]{dzxc-arch-diagram.pdf}%
+    \cgraph[0.7375]{dzxc-arch-diagram2.pdf}%
     \vspace*{-9mm}  
     \end{wrapfigure}
 level quantum programs to low-level operations on quantum hardware platforms.