Update lesson.md

[fubar1337]

What does this change?

Module: Week(s):

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

Improving resources

Rendered Pages

[SallyMcGrath]

Not enough detail here on the purpose of these changes