Update README.md

Author: josemoracard

.learn/exercises/03.1-app-run/README.md

@@ -2,16 +2,16 @@
 
 After creating our app, we need to run and start the application.
 
-When the application runs, it will take over your command line and you will not be able to type on it anymore because a server application (like flask) never stops running. It keeps waiting for "requests" forever.
+When the application runs, it will take over your command line, and you will not be able to type on it anymore because a server application (like Flask) never stops running. It keeps waiting for "requests" forever.
 
 ## 📝 Instructions:
 
 1. Add the following lines at the bottom of your `app.py` file (Remember, this should be inside of your `src` folder on the root directory):
 
 ```python
-# These two lines should always be at the end of your app.py file.
+# These two lines should always be at the end of your app.py file
 if __name__ == '__main__':
-  app.run(host='0.0.0.0', port=3245, debug=True)
+    app.run(host='0.0.0.0', port=3245, debug=True)
 ```
 
 > These two lines should always be at the very end of your file.
@@ -27,4 +27,5 @@ $ pipenv run python src/app.py
 ![Running Terminal](../../assets/running-flask-app.gif?raw=true)
 
 ## Command Explanation:
-We use our combined `pipenv` command to start up our virtual environment and `run` it using `python`. Our target file for starting our server for future requests is our `src/app.py`.
+
+We use our combined `pipenv` command to start up our virtual environment and *run* it using Python. Our target file for starting our server for future requests is our `src/app.py`.