Update links to the online book

README.md

@@ -33,5 +33,5 @@ mdbook serve --open
 
 This will automatically rebuild the book whenever you edit the contents.
 
-[book]: https://robmoss.github.io/git-is-my-lab-book/
+[book]: https://git-is-my-lab-book.net/
 [license]: http://creativecommons.org/licenses/by-sa/4.0/

src/collaborating/continuous-integration.md

@@ -4,7 +4,7 @@ Continuous Integration (CI) is an automated process where code changes are merge
 This can provide rapid feedback while you develop your code and collaborate with others, as long as commits are regularly pushed to the central repository.
 
 ```admonish info
-This book is an example of Continuous Integration: every time a commit is pushed to the [central repository](https://github.com/robmoss/git-is-my-lab-book), the [online book](robmoss.github.io/git-is-my-lab-book/) is automatically updated.
+This book is an example of Continuous Integration: every time a commit is pushed to the [central repository](https://github.com/robmoss/git-is-my-lab-book), the [online book](https://git-is-my-lab-book.net/) is automatically updated.
 
 Because the central repository is hosted on GitHub, we use [GitHub Actions](https://docs.github.com/en/actions/quickstart). Note that this is a GitHub-specific CI system.
 You can view the update action for this book [here](https://github.com/robmoss/git-is-my-lab-book/blob/master/.github/workflows/deploy.yml).