fix doc builder

Author: phfaist

doc/conf.py

@@ -12,12 +12,10 @@
 # -- Project information -----------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
 
-import tomllib
+import toml
 from datetime import datetime
 from pathlib import Path
-_pyproject_path = Path(__file__).resolve().parent.parent / "pyproject.toml"
-with open(_pyproject_path, "rb") as f:
-    _pyproject = tomllib.load(f)
+_pyproject = toml.load(Path(__file__).resolve().parent.parent / "pyproject.toml")
 _author = ", ".join(_pyproject["tool"]["poetry"]["authors"])
 _year = datetime.now().year