Avoid inserted missingfigure to overlap with the following text.

todonotes.dtx

@@ -1,4 +1,4 @@
-% \iffalse meta-comment
+&% \iffalse meta-comment
 %
 % Copyright (C) 2015 by Henrik Skov Midtiby <henrikmidtiby@gmail.com>
 % -------------------------------------------------------
@@ -589,15 +589,16 @@
 % \end{verbatim}
 % \missingfigure{Testing a long text string}
 % \begin{wrapfigure}[1]{r}[2cm]{6cm}
-% \missingfigure[figwidth=6cm]{Add a test image \ldots}
+% \missingfigure[figwidth=6cm]{Add an image \ldots}
 % \end{wrapfigure}
 % Another usage of the option is when |\missingfigure| is used in
 % the wrapfigure environment.
 % \begin{verbatim}
 % \begin{wrapfigure}[1]{r}[2cm]{6cm}
-% \missingfigure[figwidth=6cm]{Add a test image \ldots}
+% \missingfigure[figwidth=6cm]{Add an image \ldots}
 % \end{wrapfigure}
 % \end{verbatim}
+% \vspace{2cm}
 %
 % \DescribeMacro{figheight}
 % The |figheight=length| option changes the height of the inserted