add text to cfp submission page

[kcbraunschweig]

On the cfp presentation submission page:
https://www.socallinuxexpo.org/node/add/presentation

Can you add some additional text around the "Message to reviewers" field to indicate some notes about things that should go in that field. Here's some proposed text:

If this session is intended as a Workshop rather than a Lecture, please note that and indicate your desired Workshop length and any prerequisites needed of attendees.
Please indicate if you need any additional accommodation in order to give your presentation effectively.