chore: rebase with main (WEB-31)

CONTRIBUTING.md

@@ -111,3 +111,39 @@ git rebase main
 ### Force-push your changes
 
 Run `git push --force` to update your remote branch and eventually, your pull request.
+
+## When your Pull Request is merged
+
+That's Great, your work is well appreciated! If you would like to keep contributing, you should update your fork and update your local repository.
+
+## When your branch goes out of date
+
+This often happens and is mostly encountered after a pull request opened by another individual is merged to the `main` branch. Here are steps to follow if this happens:
+
+> You may choose to merge them the `main` branch on GitHub to your working branch which may be faster, but these steps are encouraged for a more linear-looking git history
+
+### Update your Fork
+
+1. Syncronize your Fork by going to your forked repository and ensure that you are on the `main` branch. You will see a message like { message }
+2. Click { buttonName } and click **Update Branch** on the prompt that appears.
+
+### Update your local repository
+
+1. Open a terminal in the directory of your local repository and run `git checkout main` to ensure you are on the `main` branch.
+2. Run this command to update your local repository, you can read more about `git pull` [here]().
+
+```bash
+git pull --rebase
+```
+
+3. Now checkout your working branch with `git checkout [branch_name]` and run:
+
+```bash
+git rebase main
+```
+
+4. You may run into a merge conflict. If you do, [here's how to resolve them](), you have to do that before preceeding.
+
+### Force-push your changes
+
+Run `git push --force` to update your remote branch and eventually, your pull request.