Replace comma with hyphen

cv.tex.in

@@ -67,7 +67,7 @@
 
   \begin{cvsection}{Ausbildung}
     ((* for stage in resume.education *))
-    \cvperiod{((( stage.startDate|simpledate )))--((( stage.endDate|simpledate )))}{\emph{((( stage.studyType )))}, ((( stage.institution )))}
+    \cvperiod{((( stage.startDate|simpledate )))--((( stage.endDate|simpledate)))}{\emph{((( stage.studyType )))} -- ((( stage.institution )))}
     ((* if stage.highlights *))
       \vspace{-1.8em}
       \begin{itemize}[rightmargin=8em]