adapted again to use wget a zip and not git clone

docs/setup.rst

@@ -115,7 +115,9 @@ Install the tutorial
 The tutorial is available for download on the SCC Gitlab repository::
 
   cd $HOME
-  git clone https://git.scc.kit.edu/jk7683/grk2450-fireworks-tutorial
+  wget https://git.scc.kit.edu/jk7683/grk2450-fireworks-tutorial/-/archive/master/grk2450-fireworks-tutorial-master.zip
+  unzip grk2450-fireworks-tutorial-master.zip
+  mv grk2450-fireworks-tutorial-master grk2450-fireworks-tutorial
   cd grk2450-fireworks-tutorial
   export PYTHONPATH=$PWD/lib:$PYTHONPATH
   export PATH=$PWD/bin:$PATH