Guidelines, Code of Conduct and logos

https://www.gatsbyjs.org/guidelines/logo/ for ref

The only entry point provided is https://www.gatsbyjs.org/guidelines/logo/; start by reviewing that reference and the issue's seven-comment discussion. No repository files, tests, or specific requested change are named, so clarify the target guidelines, Code of Conduct, or logos before work begins; done cannot be verified until that scope is defined.

由索引模型根據 Issue 內容生成。