Updated README.md with 1 addition and 1 removal
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 npm run smoke-test
 ```
 
-This will start the server, run a series of API tests for registration, login, task management, and logout, and then shut down the server. It also cleans up the test database files (`database.db` and `sessions.db`).
+This will start the server, run a series of API tests for registration, login, task management, and logout, and then shut down the server. It also cleans up the test database files (`database.db`, `database.db-wal`, `database.db-shm`, and `sessions.db`).
 
 ## Project Structure