Update changelog

Author: thecrypticace

CHANGELOG.md

@@ -51,7 +51,8 @@ This release of `@tailwindcss/line-clamp` is designed for Tailwind CSS v3.0+, an
 
 Initial release!
 
-[unreleased]: https://github.com/tailwindlabs/tailwindcss-line-clamp/compare/v0.3.1...HEAD
+[unreleased]: https://github.com/tailwindlabs/tailwindcss-line-clamp/compare/v0.4.0...HEAD
+[0.4.0]: https://github.com/tailwindlabs/tailwindcss-line-clamp/compare/v0.3.1...v0.4.0
 [0.3.1]: https://github.com/tailwindlabs/tailwindcss-line-clamp/compare/v0.3.0...v0.3.1
 [0.3.0]: https://github.com/tailwindlabs/tailwindcss-line-clamp/compare/v0.2.1...v0.3.0
 [0.2.1]: https://github.com/tailwindlabs/tailwindcss-line-clamp/compare/v0.2.0...v0.2.1