Update deployments.md

What does this MR do?

Adds the status property to the deployment object to match the docs. I was confused because there is a status in the deployable object inside the deployment object but turns out there is one on the outside object as well.

Screenshots

n/a

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

Just adding a single property to the docs for an API.