Feature: Update "Introduction to Contributing"

[adiati98]

Type of feature

📝 Documentation

Current behavior

There are a couple of things that we need to update in the contributing guide:

1. Create New Branch: Compliance

   We have a compliance action that runs to check protected branch. If changes are made directly on default branch, it will give below message:

   ## Protected Branch
   
   In order to be considered for merging, the pull request changes must
   not be implemented on the "%branch%" branch. This is described in our
   [Contributing Guide](https://docs.opensauced.pizza/contributing/introduction-to-contributing/).
   We would suggest that you close this PR and implement your changes as
   described in our Contributing Guide and open a new pull request.

   Contributors are suggested to close the PR and create a new branch as described in the contributing guide. However, we don't have this stated anywhere in our contributing guide.

2. Admonitions

   Docusaurus supports special admonitions syntax to highlight note, tip, info, etc. There are some notes and tips that we can highlight in this page.

Suggested solution

1. Update the instructions in Pull Requests section by emphasizing the importance of creating new branch and that PRs that has been made directly on default branch will be closed.
2. Add special Docusaurus special admonitions syntax for notes and tips accross the page.

Additional context

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

Contributing Docs

• I agree to follow this project's Contribution Docs

[github-actions]

🎉 This issue has been resolved in version 1.70.0 🎉

The release is available on:

• GitHub release
• ghcr.io container (@latest dist-tag)

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