Fix minor typos in comments.

[realybin]

PR Checklist

• Created a feature/dev branch in your fork (vs. submitting directly from a commit on main)
• Based off latest main branch of toolkit
• PR doesn't include merge commits (always rebase on top of our main, if needed)
• Contains NO breaking changes
• Code follows all style conventions

Other information

[realybin]

@dotnet-policy-service agree

[Sergio0694]

Thank you! 🙂