Add steps for ensuring pre-commit hooks are installed

Author: dragid10

README.md

@@ -50,7 +50,7 @@ Follow these steps and note these guidelines to begin contributing:
 
 ## Working on an issue
 
-- The easiest way to make changes and and test them is by using [![GitHub Codespaces](https://github.com/codespaces/badge.svg)](https://codespaces.new/BlackPythonDevs/blackpythondevs.github.io)
+- The easiest way to make changes and test them is by using [![GitHub Codespaces](https://github.com/codespaces/badge.svg)](https://codespaces.new/BlackPythonDevs/blackpythondevs.github.io)
 
 - You can also access the Codespaces from the repository main page:
 
@@ -70,6 +70,14 @@ Follow these steps and note these guidelines to begin contributing:
 
   ![Bundle install terminal](/assets/images/bundle_install_terminal.png)
 
+- Afterwards, run the command `pip install -r requirements-dev.txt` to install the python dev dependencies.
+
+  ![Pip install terminal](/assets/images/pip_install_terminal.png)
+
+- Install the pre-commit hooks to automatically format the code before committing. Run the command `pre-commit install`:
+
+  ![Pre-commit install terminal](/assets/images/pre-commit_install_terminal.png)
+
 - After installing the dependencies, its time to run the application. We do this by running the command `bundle exec jekyll serve` or run the default **Build Task** <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>B</kbd>:
 
   ![Jekyll serve terminal](/assets/images/jekyll_serve_terminal.png)
@@ -82,6 +90,8 @@ Follow these steps and note these guidelines to begin contributing:
 
   ![Running page](/assets/images/running_page.png)
 
+### Testing Changes
+
 - Test your changes (create new tests as needed)
 
 - Once you’ve committed and pushed all of your changes to GitHub, go to the page for your fork on GitHub, select your development branch, and click the pull request button. Please ensure that you compare your feature branch to the desired branch of the repo you are supposed to make a PR to. If you need to make any adjustments to your pull request, just push the updates to GitHub. Your pull request will automatically track the changes in your development branch and update it. 🥳