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

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

AGENTS.md

@@ -157,6 +157,7 @@ ______________________________________________________________________
 ### General structure
 
 For an up-to-date overview of the repository layout, see `README.rst` in the project root.
+
 ### Key functionality
 
 - core.py exposes the cachier decorator. It chooses a backend (pickle, mongo, memory, SQL, or Redis) and wraps the target function: