update readme of CIE patch about launching PSIM

Wesley Hsurequested to merge
dev_1 into main

What does this MR do?

Introduce about how to launch PSIM

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Developer checklist

  • The MR is for a single purpose.
  • The MR is verified and it works as expected.
  • Conforms to coding sytle

Reviewer checklist

  • The MR matches what the description says. No more, no less.
  • No logic error.
  • The MR is double verified.

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