DOC: "Delete LDAP Linux Accounts" Page needs improvement

[Greg Waines]

Brief Description
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The following page needs some improvement: https://docs.starlingx.io/security/kubernetes/delete-ldap-linux-accounts-7de0782fbafd.html

The suggested improvements are captured in https://review.opendev.org/c/starlingx/docs/+/901833 COMMENTS that came in AFTER THE REVIEW WAS MERGED.

Generally comments were:
- the first few steps of the DELETE procedure that explain how to ADD a user,
  should be moved to a PREREQUISITE section or a BACKGROUND section

Severity
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<Minor: System/Feature is usable with minor issue>

Steps to Reproduce
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NA

Expected Behavior
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DELETE user procedure should only talk about deleting the user ... not how to add the user.

Actual Behavior
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DELETE user procedure starts by adding a user.

Reproducibility
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100%

System Configuration
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DOCS

Branch/Pull Time/Commit
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DOCS

Last Pass
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Never

Timestamp/Logs
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NA

Test Activity
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Evaluation

Workaround
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NA