build: Update project metadata

- The "description" field now uses the correct spelling of
  py-capellambse
- Shorten the license info in the PyPI sidebar to just the license name

pyproject.toml

@@ -9,10 +9,10 @@ build-backend = "setuptools.build_meta"
 dynamic = ["version"]
 
 name = "capellambse-context-diagrams"
-description = "Extension for python-capella-mbse that adds automatically generated context diagrams for arbitrary model elements."
+description = "Extension for py-capellambse that adds automatically generated context diagrams for arbitrary model elements."
 readme = "README.md"
 requires-python = ">=3.10"
-license = { file = "LICENSES/Apache-2.0.txt" }
+license.text = "Apache-2.0"
 authors = [
   { name = "DB InfraGO AG" },
 ]