Fix comparison range in change log

Author: leadpony

CHANGELOG.md

@@ -1756,7 +1756,7 @@ transfer is disabled
 - Initial release
 
 [Unreleased]: https://github.com/Azure/batch-shipyard/compare/4.0.0rc1...HEAD
-[4.0.0rc1]: https://github.com/openclosed-dev/batch-shipyard/compare/3.9.0...4.0.0rc1
+[4.0.0rc1]: https://github.com/openclosed-dev/batch-shipyard/compare/3.9.1...4.0.0rc1
 [3.9.1]: https://github.com/Azure/batch-shipyard/compare/3.9.0...3.9.1
 [3.9.0]: https://github.com/Azure/batch-shipyard/compare/3.8.2...3.9.0
 [3.8.2]: https://github.com/Azure/batch-shipyard/compare/3.8.1...3.8.2