STREAMS-2373 upgrade zookeeper version

[jukedom]

Thank you for your contribution to the Axway Streams documentation.

Describe the changes

Update documentation to reflect zookeeper version upgrade.

https://deploy-preview-161--streams-open-docs.netlify.app/docs/relnotes/20220630_streams_relnotes/
https://deploy-preview-161--streams-open-docs.netlify.app/docs/architecture/

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[epiasentin-axway]

@dominiquemongelli Could you please update the PR description with urls of the modified files ?

[jukedom]

@epiasentin-axway Links have been added.