docs(contribution-guide): add pre-PR steps for conflict free merging (#7773)

* docs(contribution-guide): add pre-PR steps for conflict free merging

Author: TusharThakur04

.github/CONTRIBUTING.md

@@ -81,6 +81,9 @@ After getting some feedback, push to your fork branch and submit a pull request.
 suggest some changes or improvements or alternatives, but for small changes your pull
 request should be accepted and merged fairly quick.
 
+> Before submitting a pull request, ensure your feature branch is up to date with the latest changes from the upstream `main` branch to avoid conflicts during review.
+> You can go through this article to learn about [rebase technique][14]
+
 Issue the PR to the [main][8] branch.
 
 > See [GitHub documentation][9] for more help.
@@ -126,3 +129,4 @@ any time spent fixing typos or clarifying sections in the documentation.
 [10]: http://conventionalcommits.org/
 [11]: https://github.com/conventional-changelog/standard-version
 [13]: https://yarnpkg.com/lang/en/docs/install
+[14]: https://dev.to/matks/what-it-means-to-rebase-a-pull-request-submitted-on-github-5717