[Cookbook] Fix XML example of RTE
bug #4707 [Cookbook] Fix XML example for RTE (dunglas)

This PR was merged into the 2.3 branch.

Discussion
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[Cookbook] Fix XML example for RTE

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

Commits
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051b5ca [Cookbook] Fix XML example of RTE