#19549: docs(plugins): add openclaw-linear to community plugins

## Summary - Adds [openclaw-linear](https://github.com/stepandel/openclaw-linear) to the community plugins list - Linear integration providing webhook routing, issue management, and project tools via the Linear GraphQL API - Published on npm as [`openclaw-linear`](https://www.npmjs.com/package/openclaw-linear) ## Checklist - [x] Plugin published on npmjs - [x] Source code hosted on GitHub (public repo) - [x] Repository includes setup/usage docs and issue tracker - [x] Active maintenance - [x] Entry follows candidate format from docs ## Test plan - [ ] Verify the community plugins page renders correctly with the new entry 🤖 Generated with [Claude Code](https://claude.com/claude-code) <!-- greptile_comment --> <h3>Greptile Summary</h3> Added `openclaw-linear` plugin entry to the community plugins documentation following the required format. The entry includes all necessary information: plugin name, npm package, GitHub repository, description, and installation command. No issues found with formatting or structure. <h3>Confidence Score: 5/5</h3> - This PR is safe to merge with no risk - Simple documentation addition with no code changes, follows exact format requirements, all required fields present, no formatting or structural issues - No files require special attention _{Last reviewed commit: 1b6f4a7} <!-- greptile_other_comments_section --> _{(2/5) Greptile learns from your feedback when you react with thumbs up/down!} <!-- /greptile_comment -->