Update 00-toc.md

[Grammaresque]

Apply AP style for consistency, resulting in fewer capitalized words and revision to formatting of bulleted list. Revised sequencing statements in chapter overviews for clarity and relating this doc to chapter titles.

Author checklist (Completed by original Author)

• Good fit for the Rocky Linux project? Title and Author Metatags inserted ?
• If applicable, steps and instructions have been tested to work
• Initial self-review to fix basic typos and grammar completed

Rocky Documentation checklist (Completed by Rocky team)

• 1st Pass (Document is good fit for project and author checklist completed)
• 2nd Pass (Technical Review - check for technical correctness)
• 3rd Pass (Detailed Editorial Review and Peer Review)
• Final approval (Final Review)

[github-actions]

Test results for 1524a22:

Number of broken URLs: 2

URL,RESULT,FILENAME
 https://mirror2.sandyriver.net/pub/rocky/8.6/PowerTools/x86_64/os/,failed,books/admin_guide/13-softwares.md
 https://ersei.saggis.com/,failed,guides/contribute/README.md

[wsoyinka]

Thank you @Grammaresque :-)

[sspencerwire]

@all-contributors please add @Grammaresque for content.

[allcontributors]

@sspencerwire

I've put up a pull request to add @Grammaresque! 🎉