Revisiting RPS: Update screenshot to say main branch instead of master

[zachmmeyer]

Complete the following REQUIRED checkboxes:

• [X] I have thoroughly read and understand The Odin Project Contributing Guide
• [X] The title of this issue follows the location for request: brief description of request format, e.g. NodeJS course: Add lessons on XYZ

The following checkbox is OPTIONAL:

• [ ] I would like to be assigned this issue to work on it

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1. Description of the Feature Request:

https://github.com/TheOdinProject/curriculum/pull/24298#discussion_r907986194

2. Acceptance Criteria:

• [ ] Aforementioned screenshot is updated

3. Additional Information:

[Overlandcoder]

I'd love to work on this!

[zachmmeyer]

@Overlandcoder All yours!

[github-actions[bot]]

This issue is stale because it has had no activity for the last 30 days.