Empty start on assignment 3

assignments/week2/main.tex

@@ -1,7 +1,7 @@
 \documentclass[../main_text.tex]{subfiles}
 \begin{document}
 
-\section{Week 2}
+\section{Assignment 2}
 
 \exercise*[1.1.1]
 \begin{tcolorbox}
@@ -133,7 +133,7 @@ $y$ can be given by the supremum; $x \leq \sup A$ and $y \leq \sup B$. So, $\sup
 
 A similar argument can be given for the infimum, which is left to the reader.
 
-\exercise*[7]
+\exercise[7]
 \begin{tcolorbox}
     Let
     \begin{equation*}