DOC: Added links to GitHub tutorials/resources for Forking Workflow in contributing.rst
- [x] closes #53626 (Replace xxxx with the GitHub issue number)
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [x] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [ ] Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#type-hints) to new arguments/methods/functions.
- [ ] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.

In the **contributing.rst file**, I have added information/navigation links to the GitHub documentation and tutorials for:
 1) contributing to projects
 2) forking a repo 
 3) collaborating with pull requests 
 4) working with forks

I added the updates to the _'Version control, Git and GitHub'_ section as the updates address GitHub workflows. 

I wanted to provide this information to aid new pandas contributors unsure of GitHub's forking process. I found these resources to be very helpful references when reviewing the contributing guide. Attaching a screenshot below of my local build with the changes (bordered in red). 
<img width="511" alt="contributing rst GitHub tutorial links" src="https://github.com/pandas-dev/pandas/assets/87046544/ce8c04c4-4f98-4a77-a251-58fd10469b71">
Thanks @ssharp0 