update readme for database migration

README.md

@@ -136,37 +136,36 @@ This project uses Alembic for database migrations. Follow the steps below to gen
 
 ### Prerequisites
 
-- Ensure you have Alembic installed in your Python environment. You can install it using pip:
+- Ensure your database is running. If you're using Docker, you can start the database with:
   ```bash
-  pip install alembic  ```
-
-- Make sure your database is running. If you're using Docker, you can start the database with:
-  ```bash
-  docker-compose -f .docker/postgres-compose.yaml up -d  ```
+  docker-compose -f .docker/postgres-compose.yaml up -d
+  ```
 
 ### Running Migrations
 
-1. **Configure Alembic**: Ensure that the `alembic/env.py` file is correctly set up to connect to your database. This involves setting the SQLAlchemy URL in the `alembic.ini` file.
+1. **Configure Alembic**: Ensure that the `alembic/env.py` file is correctly set up to connect to your database. The connection settings are managed through environment variables in your `.env` file.
 
 2. **Create a New Migration**: To create a new migration script, run the following command:
    ```bash
-   alembic revision --autogenerate -m "Description of changes"   ```
+   alembic revision --autogenerate -m "Description of changes"
+   ```
 
    This will generate a new migration script in the `alembic/versions` directory.
 
 3. **Review the Migration Script**: Open the generated migration script and review it to ensure it accurately reflects the changes you want to make to the database schema.
 
 4. **Apply the Migration**: To apply the migration to the database, run:
    ```bash
-   alembic upgrade head   ```
+   alembic upgrade head
+   ```
 
    This command will apply all pending migrations up to the latest one.
 
 5. **Verify the Database**: Check your database to ensure that the schema has been updated as expected.
 
 ### Troubleshooting
 
-- If you encounter any issues, ensure that your database connection settings in `alembic.ini` are correct.
+- If you encounter any issues, ensure that your database connection settings in the `.env` file are correct.
 - Check the Alembic logs for any error messages that might indicate what went wrong.
 
 For more detailed information on using Alembic, refer to the [Alembic documentation](https://alembic.sqlalchemy.org/en/latest/).