[OptionsResolver] Fix wrong namespace in example
bug #4379 [OptionsResolver] Fix wrong namespace in example (rybakit)

This PR was merged into the master branch.

Discussion
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[OptionsResolver] Fix wrong namespace in example

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | 2.6

Commits
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0db5e03 [OptionsResolver] Fix wrong namespace in example