Fix comments and ruff violations

libpdf/__init__.py

@@ -8,15 +8,15 @@
 
 :copyright: © 2020 by team useblocks
 :license: MIT, see LICENSE for more details
-"""  # needed for autodoc
+"""  # noqa: D205, D400, D415 # needed for autodoc
 
-import importlib.metadata as importlib_metadata  # Python 3.8, 3.9
+import importlib.metadata as importlib_metadata
 
 __version__: str = importlib_metadata.version("libpdf")
 __summary__: str = importlib_metadata.metadata("libpdf")["Summary"]
 
-# below imports from libpdf.core cannot be at the top avoid circular import errors in core.py when
-# importing __version__ and __summary__
+# below imports from libpdf.core cannot be at the top avoid circular import errors in
+# core.py when importing __version__ and __summary__
 import libpdf._import_forks  # noqa: F401
 from libpdf.core import main_api as load
 from libpdf.core import main_cli