[Docs] Fix some typos

[martincostello]

Pull Request

📖 Description

Fix two typos I spotted in #2393 after it was merged, and also a typo in this PR template.

🎫 Issues

None.

👩‍💻 Reviewer Notes

Trivial change.

📑 Test Plan

None.

✅ Checklist

General

• I have added tests for my changes.
• I have tested my changes.
• I have updated the project documentation to reflect my changes.
• I have read the CONTRIBUTING documentation and followed the standards for this project.

Component-specific>

• I have added a new component
• I have added Unit Tests for my new component
• I have modified an existing component
• I have validated the Unit Tests for an existing component

⏭ Next Steps

N/A