pytorch-lightning

56daabda - docs: use relative link for CONTRIBUTING.md in PR template

docs: use relative link for CONTRIBUTING.md in PR template [resolve #5] Review comment by @Copilot (PR #21614): "Consider linking to the contributing guide in the current repo (preferably via a relative link) to avoid sending reviewers to a potentially different/outdated document." --- Co-authored-by: Claude Code <noreply@anthropic.com>