[Content Bug] Week 5 PR merging instructions

[emsesc]

Identify Steps:

• Step 1 - 6

Week: 5

Describe the Issue

Instructions do not include the fact that students must open a draft PR and then mark it as ready for review in order for the bot to approve the PR.

Proposed Fix

Add instructions regarding draft PRs + marking as ready for review.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.