fix: spellcheck issues and pin cargo spellcheck

[LesnyRumcajs]

Summary of changes

Changes introduced in this pull request:

• new cargo-spellcheck got released and it's more picky; it's good but we don't want it to fail all of a sudden so I pinned the version

Reference issue to close (if applicable)

Closes

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation. All new code adheres to the team's documentation standards,
• I have added tests that prove my fix is effective or that my feature works (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes should be reflected in this document.

Outside contributions

• I have read and agree to the CONTRIBUTING document.
• I have read and agree to the AI Policy document. I understand that failure to comply with the guidelines will lead to rejection of the pull request.

Summary by CodeRabbit

Release Notes

• Documentation

  • Improved contributor guidelines with consistent formatting, spacing, and header styling throughout the documentation.

• Chores

  • Added new entries to development dictionary for improved tool recognition.
  • Pinned build tool versions for consistent development environment setup across all configuration files.

[coderabbitai]

Walkthrough

Updates documentation tooling configuration and dependencies by pinning cargo-spellcheck to version 0.15.7 in workflow and task files, adding new dictionary entries to the spell check dictionary, and applying minor formatting corrections to the contributing guide.

Changes

Cohort / File(s)	Summary
Spell Check Dictionary .config/forest.dic	Added 4 new entries (nextest, SDK, toml, traceback) and updated dictionary size counter from 258 to 262.
CI/Build Tooling Configuration .github/workflows/docs-check.yml, mise.toml	Pinned cargo-spellcheck dependency to version 0.15.7 in both the GitHub Actions workflow install step and the mise task runner configuration.
Documentation Formatting CONTRIBUTING.md	Applied cosmetic formatting corrections including emoji spacing, header capitalization, and punctuation standardization (e.g., "Styleguides" → "Style Guides", "🤖Code formatting" → "🤖 Code formatting").

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related PRs

• fix: docs linting #6452: Modifies the same docs-check workflow and mise.toml CI configuration files related to documentation tooling.

Suggested labels

dependencies

Suggested reviewers

• hanabi1224
• akaladarshi

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the main changes: fixing spellcheck issues (dictionary updates in forest.dic and formatting in CONTRIBUTING.md) and pinning cargo-spellcheck to version 0.15.7.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

• 📝 Generate docstrings (stacked PR)
• 📝 Generate docstrings (commit on current branch)

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix-spellcheck

Warning

Review ran into problems

🔥 Problems

Linked repositories: Couldn't analyze filecoin-project/lotus - clone failed: Clone operation failed: Cloning into '/home/jailuser/git'...
warning: templates not found in /usr/share/git-core/templates
fatal: unable to access 'https://github.com/filecoin-project/lotus.git/': Failed to connect to github.com port 443 after 135204 ms: Couldn't connect to server

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