Update CONTRIBUTING.md to include Git Hooks

CONTRIBUTING.md

@@ -1,5 +1,23 @@
 # Contribution Guidelines
 
+## Prerequisites
+
+1. Install pre-commit, for example (using `pip`):
+
+    ```bash
+    pip install pre-commit
+    ```
+
+    For more information, see [pre-commit installation](<https://pre-commit.com/#installation>
+
+2. Install the git hook scripts:
+
+    ```bash
+    pre-commit install
+    ```
+
+    Now `pre-commit` will run automatically on `git commit`, using configuration in `.pre-commit-config.yaml`!
+
 ## Adding a new item
 
 - Try to fit your item into an existing sections. Open a suggestion to start as discussion about any new sections.