Update examples template description

From private conversations

Hi everyone, Luckily we started seeing some people at ACE create Example issues for PyDPF lately, yet the question of the IP (and size) of the result file the example is based on is always a problem. My question is: would it be possible for the section in the template where we ask people to drag and drop their result file, to have a check box reminding them to check for IP and confirm there is no private data, before actually activating the drop zone?