URP to printversion.pdf

Doc/Sda1/prerequisites.xml

@@ -52,7 +52,7 @@
 
           <para>You may also want to use the corresponding PDF version of the
           above table within <filename
-          xlink:href="https://freedocs.mi.hdm-stuttgart.de/index.jsp?topic=/de.hdm_stuttgart.mi.lectures/printversion.pdf">printversion.pdf</filename>
+          xlink:href="printversion.pdf">printversion.pdf</filename>
           to keep track of your personal advances by filling in your
           completion status on individual exercises.</para>
         </glossdef>