[pre-commit.ci] auto fixes from pre-commit hooks

Author: pre-commit-ci[bot]

Diff for: doc/source/conf.py

@@ -15,8 +15,8 @@
 
 import sys
 import time
-from pathlib import Path
 from importlib.metadata import version
+from pathlib import Path
 
 autodoc_mock_imports = [
     "diffpy.utils",