fix name of startup file

git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@259 bbaffbd6-741e-11dd-a85d-61de82d9cad9

desktop/pycam.desktop

@@ -4,7 +4,7 @@ Encoding=UTF-8
 Name=PyCAM
 GenericName=Toolpath Generator
 Comment=Toolpath Generation for 3-Axis CNC machining
-Exec=pycam_start.py
+Exec=pycamGUI
 Terminal=false
 Type=Application
 Categories=Development;Engineering;Robotics