Update README.md

Author: josemoracard

.learn/exercises/01-hello-world/README.md

@@ -1,6 +1,6 @@
 # Hello World with Flask 
 
-During this tutorial, we'll be building a REST API using the Python programming language and the [Flask library](https://flask.palletsprojects.com/en/1.1.x/) (ideal for creating APIs).
+During this tutorial, we'll be building a REST API using the Python programming language and the [Flask library](https://flask.palletsprojects.com/) (ideal for creating APIs).
 
 But we are going to do it the right way! Following all the good practices, we have to install and learn some things first.
 
@@ -10,31 +10,30 @@ But we are going to do it the right way! Following all the good practices, we ha
 
 2. Pipenv: we are going to be using the [Pipenv package manager](https://pipenv-fork.readthedocs.io/en/latest/) during these exercises, please install [Pipenv in your computer](https://github.com/pypa/pipenv#installation) if you don't have it already.
 
-If you are building this project using Gitpod, you don't have to install anything. Pipenv and Python 3 already come pre-installed.
+If you are building this project using Codespaces or Gitpod, you don't have to install anything. Pipenv and Python 3 already come pre-installed.
 
 ## 📝 Instructions:
 
-1. Open a new terminal (leave this one open)
+1. Open a new terminal (leave this one open).
 
-2. Make sure you have python version 3 by running the following commands:
+2. Make sure you have Python version 3 by running the following commands:
 
 ```bash
 $ python --version
 
-# alternatively you can type
+# Alternatively you can type:
 
 $ python3 --version
 ```
 
-
-👉 Note: if you don't have python version 3 you should go ahead and install it, we [🔥 strongy recommend using Pyenv](https://github.com/pyenv/pyenv) to install python.
+> 👉 Note: if you don't have python version 3 you should go ahead and install it, we [🔥 strongy recommend using Pyenv](https://github.com/pyenv/pyenv) to install python.
 
 3. Make sure you have pipenv installed:
 
-Instead of using Pip and virtual env separately, we are going to be using Pipenv: A combination of both technologies that will make your life much easier.
+Instead of using Pip and a virtual environment separately, we are going to be using Pipenv: A combination of both technologies that will make your life much easier.
 
 ```bash
 $ pipenv --version
 ```
 
-Test your step and click `next →` continue.
+Finish the instructions and click `next →` to continue.