Update README.md

README.md

@@ -20,6 +20,8 @@ python-dateutil>=2.8.2
 sqlite3>=3.35.0
 
 # Project Structure
+
+```txt
 event_analysis/
 ├── src/
 │   ├── __init__.py
@@ -34,6 +36,7 @@ event_analysis/
 │   └── results.html
 ├── main.py
 └── requirements.txt
+```
 
 # Installation and Running
 ```bash