Fix grammatical issue: Capitalize sentence beginnings in Section 4

[shaymolcho]

This commit corrects a grammatical issue in Section 4 of the document by capitalizing the first word of sentences that previously started with a lowercase letter. Proper capitalization ensures consistency, readability, and adherence to standard English grammar rules.

What does this PR do?

Add resource(s) | Remove resource(s) | Add info | Improve repo

For resources

Description

Why is this valuable (or not)?

How do we know it's really free?

For book lists, is it a book? For course lists, is it a course? etc.

Checklist:

• Read our contributing guidelines.
• Search for duplicates.
• Include author(s) and platform where appropriate.
• Put lists in alphabetical order, correct spacing.
• Add needed indications (PDF, access notes, under construction).
• Used an informative name for this pull request.

Follow-up

• Check the status of GitHub Actions and resolve any reported warnings!

[eshellman]

Take it up with creative commons.