Fix error in deployment example

[alexazl]

Description

Add the project ID annotation to the deployment example

Reasons

It was mistakenly removed in a previous change

Content Checklist

Please follow our style when contributing to CircleCI docs. Our style guide is here: https://circleci.com/docs/style/style-guide-overview.

Please take a moment to check through the following items when submitting your PR (this is just a guide so will not be relevant for all PRs) 😸:

• Break up walls of text by adding paragraph breaks.
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