Update week4.do.txt

Author: mhjensen

doc/src/week4/week4.do.txt

@@ -711,6 +711,10 @@ plt.show()
 !ec
 
 
+!split
+===== Gates, the whys and hows =====
+
+
 
 \frametitle{Schr\"odinger picture}
 \begin{small}