revert changesets url change

Author: hsubox76

.changeset/README.md

@@ -5,4 +5,4 @@ with multi-package repos, or single-package repos to help you version and publis
 find the full documentation for it [in our repository](https://github.com/changesets/changesets)
 
 We have a quick list of common questions to get you started engaging with this project in
-[our documentation](https://github.com/changesets/changesets/blob/main/docs/common-questions.md)
+[our documentation](https://github.com/changesets/changesets/blob/master/docs/common-questions.md)