Minor cleanup

Misc/Warm-Ups/electician.tex

@@ -1,5 +1,3 @@
-% use [nosolutions] flag to hide solutions.
-% use [solutions] flag to show solutions.
 \documentclass[
 	solutions,
 	nowarning,
@@ -28,6 +26,8 @@
 		{The Electrician's Warm-Up}
 		{Prepared by Mark on \today}
 
+	\vspace{2mm}
+
 	Ivan the electician is working in an apartment. He has a box of switches, which come in three types:
 	\begin{center}
 		\begin{minipage}[t]{0.3\textwidth}