Update docs/operator-manual/application.yaml: fix kustomize namePrefix misconception

[whyvez]

• Removed comment about what namePrefix does. (i.e. it does not add a prefix to the image)
• Added examples of other supported transformers. (based on looking at the source code)
• Added link to the kustomize docs where the transormers are described in more detail.

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• [ ] Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
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[codecov[bot]]

Codecov Report

Merging #10162 (ee7a1db) into master (7bd9e1e) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #10162   +/-   ##
=======================================
  Coverage   45.92%   45.92%           
=======================================
  Files         227      227           
  Lines       27403    27403           
=======================================
  Hits        12584    12584           
  Misses      13110    13110           
  Partials     1709     1709           

Impacted Files	Coverage Δ
util/settings/settings.go	50.90% <0.00%> (ø)

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[crenshaw-dev]

Cherry-picked onto release-2.4 for 2.4.9.