Update projects.md

[kfklein15]

What does this change?

Module: Final Projects Week(s): Briefing list

Checklist

• [ x] I have read the contributing guidelines
• [ x] I have checked my spelling and grammar with an automated tool
• [x ] I have previewed my changes to check the markdown renders as I intend
• [ x] I have run my code to check it works
• [x ] My changes follow our Style Guide

Description

Adding information that previous briefings have already been done to avoid people picking up old briefings and re-doing systems without knowing it. The old briefings can still be used, but at least this way people are informed they are old :)

Who needs to know about this?

Rendered Pages

[SallyMcGrath]

Closing this as obsolete. All new cohorts had already moved to new curriculum