Include motorboard set-up guide link in README

[NarNarfighter007]

Added a link to the motorboard set-up guide in the README.

Description

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Associated / Resolved Issue

Resolves # or ClickUp card

Design Documents

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Steps to Test

Test Case 1

1. Step 1
2. Step 2
3. Step 3

Expected result:???

Key Files to Review

Group 1

• File 1
• File 2

Group 2

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• File 4

Review Checklist

• Docstrings: All methods and classes should have the file appropriate docstrings which follow the guidelines in the "Contributing"
  page of our docs.
• Remove extra print statements: Any print statements used for debugging should be removed
• Tag reviewers: Tag some people for review and ping them on Slack

(Optional) Sub-issues (for drafts)

Note: if you find yourself breaking this PR into many smaller features, it may make sense to break up the PR into logical units based on these features.

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