docs: improve docs/user-guide/kustomize.md

[my-git9]

improve kustomize.md

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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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[ashutosh16]

@my-git9 Thanks for opening PR. Can you update the title to docs. Refer the guidelines to update the title
https://argo-cd.readthedocs.io/en/stable/developer-guide/toolchain-guide/#title-of-the-pr

[my-git9]

@my-git9 Thanks for opening PR. Can you update the title to docs. Refer the guidelines to update the title https://argo-cd.readthedocs.io/en/stable/developer-guide/toolchain-guide/#title-of-the-pr

Updated

[crenshaw-dev]

Thanks!

[codecov]

Codecov Report

Merging #10025 (08a5ae3) into master (0b5b4a8) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #10025   +/-   ##
=======================================
  Coverage   45.89%   45.89%           
=======================================
  Files         227      227           
  Lines       27353    27353           
=======================================
  Hits        12555    12555           
  Misses      13095    13095           
  Partials     1703     1703           

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

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