docs: Github -> GitHub, and ensure it doesn't happen again

docs/contributing.md

@@ -111,7 +111,7 @@ bin/bump_version.py
 
 You'll be prompted to enter the new version number. Update the changelog when prompted. The script will create a 'bump version' commit and version tag.
 
-Finally, cut the release and upload to PyPI/Github.
+Finally, cut the release and upload to PyPI/GitHub.
 
 ```bash
 rm -rf dist

docs/data/projects.yml

@@ -1,7 +1,7 @@
 # Fields:
 # name: required, printed name
-# gh: Github repo (eventually a url: could be added for non-github projects)
-# stars: Github repo (optional, if different from package, such as for Twisted)
+# gh: GitHub repo (eventually a url: could be added for non-github projects)
+# stars: GitHub repo (optional, if different from package, such as for Twisted)
 # os: Operating system list, [windows, apple, linux] (optional)
 # ci: [appveyor, github, azurepipelines, circleci, gitlab, travisci] (optional)
 # notes: (text, optional)

docs/faq.md

@@ -71,13 +71,13 @@ tested, and an `arm64` wheel is not tested at all.
 
 cibuildwheel supports building non-native architectures on Linux, via
 emulation through the binfmt_misc kernel feature. The easiest way to use this
-is via the [docker/setup-qemu-action][setup-qemu-action] on Github Actions or
+is via the [docker/setup-qemu-action][setup-qemu-action] on GitHub Actions or
 [tonistiigi/binfmt][binfmt].
 
 [setup-qemu-action]: https://github.com/docker/setup-qemu-action
 [binfmt]: https://hub.docker.com/r/tonistiigi/binfmt
 
-Check out the following config for an example of how to set it up on Github
+Check out the following config for an example of how to set it up on GitHub
 Actions. Once QEMU is set up and registered, you just need to set the
 `CIBW_ARCHS_LINUX` environment variable (or use the `--archs` option on
 Linux), and the other architectures are emulated automatically.
@@ -105,7 +105,7 @@ Hopefully, this is a temporary situation. Once we have widely available Apple Si
 
     So far, only CPython 3.9 supports `universal2` and `arm64` wheels.
 
-Here's an example Github Actions workflow with a job that builds for Apple Silicon:
+Here's an example GitHub Actions workflow with a job that builds for Apple Silicon:
 
 > .github/workflows/build_macos.yml
 ```yml

docs/setup.md

@@ -4,14 +4,14 @@ title: 'Setup'
 
 # GitHub Actions [linux/mac/windows] {: #github-actions}
 
-To build Linux, Mac, and Windows wheels using Github Actions, create a `.github/workflows/build.yml` file in your repo.
+To build Linux, Mac, and Windows wheels using GitHub Actions, create a `.github/workflows/build.yml` file in your repo.
 
 > build.yml
 ```yaml
 {% include "../examples/github-minimal.yml" %}
 ```
 
-Commit this file, and push to Github - either to your default branch, or to a PR branch. The build should start automatically.
+Commit this file, and push to GitHub - either to your default branch, or to a PR branch. The build should start automatically.
 
 For more info on this file, check out the [docs](https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions).