fix: Update closed-contributions.md based on user testing (#819)

* Update closed-contributions.md based on user testing

* Update documentation/closed-contributions.md

Co-authored-by: Mike Jang <[email protected]>

---------

Co-authored-by: Alan Dooley <[email protected]>

Author: mjang

documentation/closed-contributions.md

@@ -18,11 +18,13 @@ This repository (https://github.com/nginx/documentation) is where we work by def
 The process is as follows:
 
 - Add the closed repository as a remote
+   - The closed repository is also known as `internal`
 - Create a remote branch with the prefix `internal/` in the closed repository
 - Open a pull request in the closed repository to get previews and request feedback
 - Once all stakeholders are happy with changes, close the pull request in the closed repository
 - Merge the changes from the remote (Closed) repository branch with a new branch in the open repository
 - Open a new pull request in the open repository, where it can be merged
+   - You do not have to get approvals a second time
 
 You can get the URL through our internal communication channels: it will be represented in the following steps as `<closed-URL>`.
 
@@ -36,6 +38,12 @@ git remote add internal [email protected]:<closed-url>.git
 git fetch --all
 ```
 
+You can verfiy access to the closed repository in your `.git/config` file. Look for the code block that corresponds to:
+
+```
+[remote "internal"]
+```
+
 Check out the remote `main` branch, and use it to create a feature branch. **Ensure that you prefix all branch names with `internal/`**
 
 ```shell
@@ -51,7 +59,7 @@ git commit
 git push internal
 ```
 
-Open a pull request when you are ready to receive feedback from stakeholders.
+Open a pull request when you are ready to receive feedback from stakeholders. You'll see the pull request in the internal repository.
 
 After any iterative work, close the pull request. Since the closed repository is a mirror of the open one, we do not merge changes to it.
 
@@ -64,4 +72,9 @@ git merge internal/internal/feature
 git push origin
 ```
 
+This allows you to open a _new_ pull request in the open repository. To verify that pull request reflects the changes made in the closed
+repository, check the commit messages.
+
+If you are a maintainer of https://github.com/nginx/documentation, you can merge the changes without additional approvals.
+
 Once the content changes have been merged in the open repository, they will synchronize back to the closed repository.