Update README formatting

gabino · gabino · commit 4bb1e4b8544e · 2025-02-13T13:23:58.000-06:00
diff --git a/README.md b/README.md
@@ -28,7 +28,7 @@ To run unit tests, use `pytest`.
 pytest
 ```
 
-### Usage
+## Usage
 
 ```python
 from datetime import date
