Added missing colons for consistency and correctness

[shaymolcho]

Inserted missing colons in specific parts of the text to maintain consistency with the existing format. This adjustment ensures a uniform writing style, improves readability, and aligns the text structure with the rest of the document.

[ljharb]

Not every block uses a colon; there's no consistency here. It's fine to add, but I don't think it was worth a pull request.