Merge pull request #1104 from mdqst/patch-3

Typo Update CONTRIBUTING.md

Author: krofax

CONTRIBUTING.md

@@ -73,7 +73,7 @@ To submit your contribution for review:
 1. Create a new [pull request on GitHub](https://github.com/ethereum-optimism/docs/issues/new/choose).
 2. Select a PR type from the list or choose **Open a blank issue** at the bottom of the page.
 3. Complete the form as requested. For blank PR issues, please provide a clear title and accurate description/context.
-4. Click the "Create pull request"button to create the pull request effectively.
+4. Click the "Create pull request" button to create the pull request effectively.
 
 >If your pull request is not ready for review yet, choose the "[Create draft pull request](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/creating-a-pull-request)"in the dropdown. The Optimism documentation team will review your pull request only when you mark it as "[Ready for review](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/changing-the-stage-of-a-pull-request)".