fix spelling in email-address

src/HsH-classes.dtx

@@ -121,9 +121,9 @@ http://www.latex-project.org/lppl.txt
   \textsf{HsH-Classes} --- A set of \LaTeX{} classes for use in Hochschule Hannover
   \thanks{This file describes version \fileversion, last revised \filedate.}
 }
-\author{Jan Wille\thanks{E-mail: mail@janiwlle.de}}
+\author{Jan Wille\thanks{E-mail: mail@janwille.de}}
 \MaintainedBy{Maintained on \url{https://lab.it.hs-hannover.de/qxx-tul-u1/latex-template-hsh}}
-\date{Printed \today}
+\date{Created \today}
 \begin{document}
   \maketitle
   \begin{multicols}{2}