Change format of new commands

Author: Matheus

README.md

@@ -27,13 +27,15 @@ To run the migrations:
 To execute the tests:
 
 ```
-  sudo docker-compose build --build-arg INSTALL_DEV=true && sudo docker-compose run --rm backend pytest
+  sudo docker-compose build --build-arg INSTALL_DEV=true && \
+  sudo docker-compose run --rm backend pytest
 ```
 
 To run code style verification:
 
 ```
-  sudo docker-compose build --build-arg INSTALL_DEV=true && sudo docker-compose run --rm backend flake8
+  sudo docker-compose build --build-arg INSTALL_DEV=true && \
+  sudo docker-compose run --rm backend flake8
 ```
 
 And if you need to install new dependencies you can run: