fix(publishing): corrected license (#306)

Signed-off-by: Andre Wanlin <awanlin@spotify.com>

Author: awanlin

pyproject.toml

@@ -9,7 +9,7 @@ version = "1.6.0"
 description = """The core MkDocs plugin used by Backstage's TechDocs as a wrapper around multiple MkDocs plugins and Python Markdown extensions"""
 readme = "README.md"
 requires-python = ">=3.9"
-license-files = ["LICENSE"]
+license = "Apache-2.0"
 keywords = ["mkdocs"]
 authors = [
     {name = "TechDocs Core", email = "protean@spotify.com"}