link to the deployment index
minor #4041 [Cookbook][Deployment] link to the deployment index (xabbuh)

This PR was merged into the 2.3 branch.

Discussion
----------

[Cookbook][Deployment] link to the deployment index

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | all
| Fixed tickets |

Commits
-------

7b5f038 link to the deployment index