fix(mump2p): correct mismatched section description

[ygd58]

The 'When Publishing' section opens with 'When a node receives a shard:' but the steps that follow (message prep, encoding, shard distribution) describe originating a new message, not receiving one — the next section, 'When Receiving a Shard', already covers that flow correctly. Small, self-contained wording fix.

Summary by CodeRabbit

• Documentation
  • Corrected the “When Publishing” section to accurately describe publishing a new message.
  • Reformatted the control-message table for improved alignment without changing its content or meaning.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

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📥 Commits

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• docs/learn/overview/p2p.md

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📝 Walkthrough

Walkthrough

The P2P documentation now describes actions taken when a node publishes a new message. The control-message table now uses aligned columns. Its messages and purposes remain unchanged.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to d1041

The P2P publishing documentation now accurately describes publishing a message, and the control-message table formatting is corrected without changing its content. No merge-readiness risk remains.

🚥 Pre-merge checks | ✅ 9

✅ Passed checks (9 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title uses the valid fix type, includes the mump2p domain, uses an imperative summary, is under 72 characters, and has no trailing punctuation. It accurately describes the documentation correc…
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Scope Discipline	✅ Passed	PASS. The PR changes only docs/learn/overview/p2p.md. One commit corrects the heading text from “When a node receives a shard” to “When a node publishes a new message,” which matches the listed publ…
Behavior Safety	✅ Passed	PASS: The PR changes only docs/learn/overview/p2p.md. It corrects the publishing description and realigns an existing Markdown table. No executable code, API, configuration, or invariant changes are…
Over-Engineering	✅ Passed	PASS — The PR changes only wording and Markdown table spacing in docs/learn/overview/p2p.md. The full diff adds no caches, helper layers, API signature changes, or tests that assert implementation d…
Security	✅ Passed	PASS. The pull request changes only docs/learn/overview/p2p.md. The diff updates one description and realigns a Markdown table. It adds no executable content, credentials, secrets, crypto changes, v…

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