OSDOCS-17034: two node CQA pt 2

[skopacz1]

OSDOCS-17034

Version(s): 4.20 and 4.21 only

This PR addresses remaining 4.20 and 4.21 DITA errors in two node install content that was not captured in other PRs based off of the main branch

QE review: Not required

Previews: https://116003--ocpdocs-pr.netlify.app/openshift-enterprise/latest/installing/installing_two_node_cluster/about-two-node-arbiter-installation.html

[openshift-ci-robot]

@skopacz1: This pull request references OSDOCS-17034 which is a valid jira issue.

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• QE has approved this change.

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[ocpdocs-previewbot]

🤖 Tue Jul 21 17:18:44 - Prow CI generated the docs preview:

https://116003--ocpdocs-pr.netlify.app/openshift-enterprise/latest/installing/installing_two_node_cluster/about-two-node-arbiter-installation.html

[openshift-ci]

@skopacz1: all tests passed!

Full PR test history. Your PR dashboard.

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[skopacz1]

/cherrypick enterprise-4.20

[openshift-cherrypick-robot]

@skopacz1: new pull request created: #116011

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In response to this:

/cherrypick enterprise-4.20

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.