chore: simplify README instructions and clarify automation

[f0rr0]

Removed redundant instructions and clarified automation process.

Summary by CodeRabbit

• Documentation
  • Updated README with simplified contribution and editing guidelines for managing Markdown/MDX content files.
  • Modified workflow documentation to better emphasize pull request process for main branch contributions over direct pushes.
  • Consolidated automated workflow steps into clearer, more concise, actionable descriptions.
  • Removed separate configuration requirements section and related validation guidance.

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[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

README.md documentation updated to simplify workflow descriptions. Editing guidance changed from "push to main" to "PR to main," automation steps condensed into a single line, and the entire "Required configuration" section removed.

Changes

Cohort / File(s)	Change Summary
Documentation updates README.md	Modified editing content section with simplified wording (changed "push to main" to "PR to main"); condensed automation section from granular workflow steps to single-line description; removed frontmatter validation mention and entire "Required configuration" section.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

• Verification of content accuracy and clarity in simplified workflow descriptions
• Confirmation that removed sections are intentional and don't represent critical information

Poem

🐰 The docs now dance with fewer lines,
No config walls or frontmatter signs,
Just "PR to main" and all shall pass,
With checks that run and merge so fast! ✨

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch f0rr0-patch-1

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📥 Commits

Reviewing files that changed from the base of the PR and between 18256eb and eeb505d.

📒 Files selected for processing (1)

• README.md (2 hunks)

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