OSDOCS-11954:Update storage migration chapter

[tedaveryredhat]

Version(s):
4.21

Issue:
https://issues.redhat.com/browse/OSDOCS-11954

Link to docs preview:
https://100965--ocpdocs-pr.netlify.app/microshift/latest/microshift_updating/microshift-storage-migration.html

QE review:

• QE has approved this change.

[openshift-ci-robot]

@tedaveryredhat: This pull request references OSDOCS-11954 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "4.21.0" version, but no target version was set.

In response to this:

Version(s):
4.21

Issue:
https://issues.redhat.com/browse/OSDOCS-11954

Link to docs preview:

QE review:

• QE has approved this change.

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 openshift-eng/jira-lifecycle-plugin repository.

[ocpdocs-previewbot]

🤖 Wed Oct 22 19:26:51 - Prow CI generated the docs preview:

https://100965--ocpdocs-pr.netlify.app/microshift/latest/microshift_updating/microshift-storage-migration.html

[openshift-ci]

@tedaveryredhat: all tests passed!

Full PR test history. Your PR dashboard.

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. I understand the commands that are listed here.

[openshift-ci-robot]

@tedaveryredhat: This pull request references OSDOCS-11954 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "4.21.0" version, but no target version was set.

In response to this:

Version(s):
4.21

Issue:
https://issues.redhat.com/browse/OSDOCS-11954

Link to docs preview:
https://100965--ocpdocs-pr.netlify.app/microshift/latest/microshift_updating/microshift-storage-migration.html

QE review:

• QE has approved this change.

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 openshift-eng/jira-lifecycle-plugin repository.

[copejon]

/lgtm