Relocation of Content Regarding Nixpkgs Contribution Guidelines and Commit Policy

This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md). ### Built on platform(s) {#submitting-changes-platform-diversity} This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md). ### Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests) {#submitting-changes-nixos-tests} This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md). ### Tested compilation of all pkgs that depend on this change using `nixpkgs-review` {#submitting-changes-tested-compilation} This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md). ### Tested execution of all binary files (usually in `./result/bin/`) {#submitting-changes-tested-execution} This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md). ### Meets Nixpkgs contribution standards {#submitting-changes-contribution-standards} This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md). ## Hotfixing pull requests {#submitting-changes-hotfixing-pull-requests} This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md). ## Commit policy {#submitting-changes-commit-policy} This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md). ### Branches {#submitting-changes-branches} This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md). #### Master branch {#submitting-changes-master-branch} This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md). #### Staging branch {#submitting-changes-staging-branch} This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md). #### Staging-next branch {#submitting-changes-staging-next-branch} This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md). #### Stable release branches {#submitting-changes-stable-release-branches} This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md). #### Automatically backporting a Pull Request {#submitting-changes-stable-release-branches-automatic-backports} This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md). #### Manually backporting changes {#submitting-changes-stable-release-branches-manual-backports} This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md). #### Acceptable backport criteria {#acceptable-backport-criteria} This section has been moved to [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/CONTRIBUTING.md).

The sections detailing contribution standards, testing procedures (platform, NixOS tests, compilation, execution), hotfixing pull requests, and the commit policy (including branches, backporting) have been moved to the CONTRIBUTING.md file in the Nixpkgs repository.