docs(partition tool): clarifies the process to change preferred leader

[PaulRMellor]

Documentation

Clarifies the process for changing the preferred leader when using the partition reassignment tool.
It makes it clear that the order of replicas is important.

Checklist

Please go through this checklist and make sure all applicable tasks have been done

• Write tests
• Make sure all tests pass
• Update documentation
• Check RBAC rights for Kubernetes / OpenShift roles
• Try your changes from Pod inside your Kubernetes and OpenShift cluster, not just locally
• Reference relevant issue(s) and close them after merging
• Update CHANGELOG.md
• Supply screenshots for visual changes, such as Grafana dashboards

[PaulRMellor]

Thanks for the feedback @fvaleri. Do we need to mention unclean leader election in the section? Not sure of its relevance to this.

[fvaleri]

Do we need to mention unclean leader election in the section? Not sure of its relevance to this.

No, the right context would be where we talk about offline partitions.

[PaulRMellor]

Thanks for additional comments @fvaleri

[fvaleri]

LGTM. Thanks.

[PaulRMellor]

@strimzi/maintainers - Looking for sign off

[Frawless]

I am not SME, but LGTM

[scholzj]

@PaulRMellor You can request review from the maintainers group when you need one.