Fix license string

Author: penguinpee

pyproject.toml

@@ -3,7 +3,7 @@ name = "pytest-sugar"
 version = "1.0.0"
 description = "Pytest plugin that adds a progress bar and other visual enhancements"
 authors = ["Teemu <orkkiolento@gmail.com>", "Janne Vanhala <janne.vanhala@gmail.com>"]
-license = "BSD 3-Clause"
+license = "BSD-3-Clause"
 readme = "README.md"
 keywords = ["testing", "pytest", "plugin"]
 classifiers = [