Part1: Fix small errors

[sspencerwire]

• these errors range from missing code blocks for highlighting to broken internal and external links, to punctuation issues.
• they also include an admonition to detail which installation method to use for Rocky Linux 9.0 in one document.
• an effort was made to format headings more consistently between all documents

Author checklist (Completed by original Author)

• Contribution a good fit for the Rocky project? Title and Author MetaTags inserted ?
• Is this a non-English contribution?
• If applicable, steps and instructions have been tested to work on a real system
• Did you perform an initial self-review to fix basic typos and grammatical correctness

Rocky Documentation checklist (Completed by Rocky team)

• 1st Pass (Check that document is good fit for project and author checklist completed)
• 2nd Pass (Technical Review - check for technical correctness)
• 3rd Pass (Basic Editorial Review)
• 4th Pass (Detailed Editorial Review and Peer Review)
• Final pass/approval (Final Review)

[SergeCroise]

proposal (at the beginning of anacron.md):
anacron - Run commands regularly
instead of
anacron- Run commands regularly
it would simplify the translation of the headers into german

[sspencerwire]

@SergeCroise I'll push the title fix you suggested separately. Thanks!