Linter fixes

[alexandratran]

Description

• Vale was previously misconfigured and not running on any doc files. This PR updates the config to ensure the CI runs on all changed lines in md/mdx files. Reviewdog will report warnings and errors. Vale updated in update docs-spelling-check Consensys/github-actions#119 to reflect latest MetaMask conventions and balance strictness; we can continue to update if Vale introduces too much friction in new PRs.
• Fix most significant/common Vale errors in metamask-connect, smart-accounts-kit, and snaps folders. embedded-wallets may have significant remaining errors.
• Update Prettier CI to only run on changed files. In case contributors bypass the Prettier pre-commit hook and CI for some reason, other PRs won't be blocked by unrelated Prettier issues.
• Fix Prettier issues + ignore generated SAK glossary

Preview

Checklist

• If this PR updates or adds documentation content that changes or adds technical meaning, it has received an approval from an engineer or DevRel from the relevant team.
• If this PR updates or adds documentation content, it has received an approval from a technical writer.

External contributor checklist

• I've read the contribution guidelines.
• I've created a new issue (or assigned myself to an existing issue) describing what this PR addresses.

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Note

Medium Risk
Medium risk because it changes CI behavior (Prettier now checks only changed files and spelling no longer constrains FILEPATHS), which could unintentionally skip formatting/spelling enforcement or change what gets validated.

Overview
Docs linting/formatting behavior is adjusted and a batch of Vale-driven copy/format fixes are applied. CI now uses tj-actions/changed-files to run Prettier only against relevant changed files (with full git history via fetch-depth: 0) and updates the spelling job checkout depth while removing the explicit FILEPATHS restriction.

Documentation updates standardize terminology (notably sign-in/sign-out, onchain/offchain, and Wallet Standard/Adapter casing), fix typos/punctuation, improve alt text/code formatting, and update multiple internal links from .md to .mdx. Generated Smart Accounts Kit glossary output is now treated as generated-only (.gitignore/.prettierignore), and the glossary generator script drops the Prettier formatting step.

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Project	Deployment	Actions	Updated (UTC)
metamask-docs	Ready	Preview, Comment	Apr 20, 2026 7:22pm