Fix script sources

documentation/mainDocument/sections/src2pdf.sh

 #!/usr/bin/env bash
 
+# CREATE PDF FROM SOURCE CODE
+# original source http://superuser.com/questions/601198/how-can-i-automatically-convert-all-source-code-files-in-a-folder-recursively
+# modified source https://samhobbs.co.uk/2017/01/bash-script-generate-pdf-source-code-syntax-highlighting-using-latex
+# source code file names must not contain spaces
+
 ##############################
-#use this modified script in Hochautomatisiertes-Fahren/documentation/mainDocument/sections
+#use this in Hochautomatisiertes-Fahren/documentation/mainDocument/sections
 ##############################
 
 touch sourcecode.tex