docs: add how to contribute in github inteface section

Author: Revathyvenugopal162

Diff for: .gitignore

@@ -1,22 +1,32 @@
-_build
-.vscode
-*/.ipynb_checkpoints/*
+# Vscode
+.vscode/
+
+# Python
 tmp/
 .DS_Store
-.nox
-__pycache__
 *notes-from-review.md
 *.idea*
 # Grammar / syntax checkers
 styles/
 # Exclude translation .mo files
 locales/*/LC_MESSAGES/*.mo
 
+# Exclude Jupyter Notebook checkpoints
+.ipynb_checkpoints/
+*/.ipynb_checkpoints/*
+
+# Exclude Python bytecode
+__pycache__/
+
+# Exclude build directories
+_build/
 
 # Exclude virtual environments
 venv/
 env/
 ENV/
 .venv/
 .ENV/
-*/venv/
+*/venv/
+.nox
+*/.nox/

Diff for: CONTRIBUTING.md

@@ -37,17 +37,27 @@ You can do this by clicking the "Fork" button in the top right corner of the rep
 
 [Fork and Clone GitHub Repos](https://datascienceskills.org/lessons/git-github/git-intro/3-fork-clone/) is a good resource to learn more about forking.
 
-*__TODO__: This section should show a beginner user how to fork a repository in GitHub.*
-
 ## Contributing via the GitHub website
 
 ### How to edit a MarkDown file
 
-*__TODO__: This section should show how to use the GitHub interface to edit and previewing a Markdown file.*
+The Python Packaging Guide is written in myST, a variant of MarkDown. You can edit the files directly in the GitHub website.
+To do so, navigate to the file you want to edit and click the pencil icon in the top right corner of the file.
+
+![Edit file in GitHub](../images/edit-file.png)
+
+To preview your changes, click the "Preview changes" tab.
+
+![Preview changes in GitHub](../images/preview-changes.png)
 
 ### How to commit your changes
 
-*__TODO__: This section should show how to commit changes via the GitHub interface.*
+When you are done editing the file, scroll down to the bottom of the page. You will see a section called "Commit changes".
+Here you can write a title and a description for your changes. Make sure to write a clear and concise title that describes the changes you made.
+
+![Commit changes in GitHub](../images/commit-changes.png)
+
+click on the "propose changes" button to submit your changes and open a pull request. See (How to make a pull request)[#how-to-make-a-pull-request] for more information.
 
 ## Contributing locally on your computer