docs: clarify custom API Keys support / 文档：补充自定义 API Keys 兼容性说明#364

icebear0828 merged 1 commit intoicebear0828:mastericebear0828/codex-proxy:masterfrom

SsuJojo:docs/apikeys-openai-format-noteSsuJojo/codex-proxy:docs/apikeys-openai-format-noteCopy head branch name to clipboard