Fix section server was overwritten by excel

handout/sections/3d-excel.typ

@@ -28,9 +28,10 @@
   ])
 
 
-  - Comma seperated value (csv) Dateien mit Python erstellen.
+  - Comma seperated value (csv) Dateien mit Python erstellen. It is possible to do it without libraries, but it is error prone and tedious.
 
-    #sourcecode(lang: "Python", raw( read("../code/3d/output2csv-snippet.py") ))
+
+  #pysrc_with_overlay("3d/output2csv-snippet.py", [Please Improve], y_offset:-2.1cm)
 
   #pagebreak()