Update README.md

Author: TasinIshmam

README.md

@@ -10,6 +10,7 @@ Tutorial for HowToGraphQL with Typescript, Apollo-Server, Nexus and Prisma.
 3. Create a `.env` file and add the `DATABASE_URL` environment variable with a [PostgreSQL connection string](https://www.prisma.io/docs/concepts/database-connectors/postgresql#connection-details).
     - The `.env.example` file is provided as reference. 
 4. Apply database migrations: `npx prisma migrate dev` 
-5. Start the project:  `npm dev` 
+5. Start the project:  `npm run dev`
+6. Access the project at http://localhost:3000/