Features to be added to the `GitHub` section.

Add the following features:
- [ ] PRs
- [ ] [Learn how to make a PR](https://github.com/firstcontributions/first-contributions) (Can be added to the resources section as well.)
- [ ] 'Allow maintainers to edit' checkbox implies that maintainers of the project can push code to the branch of the fork from which the PR was made to make changes to the PR.
- ([Example](https://github.com/HarshKapadia2/one-or-two/pull/3/commits): Look at the owners of the two commits in the PR)
- [Making changes in a PR on your repo](https://docs.github.com/en/github/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/committing-changes-to-a-pull-request-branch-created-from-a-fork) (Only if 'Allow edits by maintainers' checkbox is checked.)
- [ ] [Draft PRs](https://docs.github.com/en/free-pro-team@latest/github/collaborating-with-issues-and-pull-requests/about-pull-requests#draft-pull-requests)
- [ ] [How to pull a PR to check it?](https://stackoverflow.com/questions/15397059/how-do-i-get-a-specific-pull-request-on-my-machine#32447815)
- To update the new PR branch: In the PR branch (Eg: 'pr-123') run `git fetch origin pull/123/head` and then `git merge FETCH_HEAD`

- [ ] Issues
- [x] General info
- [ ] [Linking a pull request to an issue using a keyword](https://docs.github.com/en/free-pro-team@latest/github/managing-your-work-on-github/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword)

- [x] CONTRIBUTING.md & contents

- [x] README.md & contents

- [x] Syncing a fork to the original repo.
- Use [this](https://medium.com/@john_pels/sync-your-git-fork-to-the-original-repo-a57d5084e20e)
- Or use [this](https://help.github.com/en/github/collaborating-with-issues-and-pull-requests/syncing-a-fork)