added Git Handbook link to further reading section

[krishnadevz]

added Git Handbook link to further reading section

Why: In the further reading section I added one resource that covers every command of GitHub and git with a description that best fit there and that can help to the whole GitHub beginners community.

What's being changed: content/github/using-git/pushing-commits-to-a-remote-repository.md

Check off the following:

• All of the tests are passing.
• I have reviewed my changes in staging.
• For content changes, I have reviewed the localization checklist
• For content changes, I have reviewed the Content style guide for GitHub Docs.

[krishnadevz]

can you guys review my pull request?

[janiceilene]

@krishnadevz Thanks for opening a PR 👍 Please fill out the pull request template in the top comment in this pull request, then we'll get this up for review!

In the future, please do not @ mention any other person in an issue or PR, unless they are already participating in that conversation.

[krishnadevz]

@krishnadevz Thanks for opening a PR 👍 Please fill out the pull request template in the top comment in this pull request, then we'll get this up for review!

In the future, please do not @ mention any other person in an issue or PR, unless they are already participating in that conversation.

okay got it I will not @ in the future but I have done changes

[shati-patel]

Thank you for the change! I'll get this merged shortly 😃

[github-actions]

Thanks very much for contributing! Your pull request has been merged 🎉 You should see your changes appear on the site in approximately 24 hours.