Merge pull request #2202 from gchp/doc-fix

Fix fizzy-saas link to point to the vendored gem instead of the archived repo

Author: jorgemanrubia

docs/development.md

@@ -74,7 +74,7 @@ Under the hood, this will create or remove `tmp/email-dev.txt`.
 
 ## SaaS gem
 
-37signals bundles Fizzy with [`fizzy-saas`](https://github.com/basecamp/fizzy-saas), a companion gem that links Fizzy with our billing system and contains our production setup.
+37signals bundles Fizzy with [`fizzy-saas`](https://github.com/basecamp/fizzy/tree/main/saas), a companion gem that links Fizzy with our billing system and contains our production setup.
 
 This gem depends on some private git repositories and it is not meant to be used by third parties. But we hope it can serve as inspiration for anyone wanting to run fizzy on their own infrastructure.