fix: updated reference architecture of roks quickstart variation using the latest guidelines & stencils (#1021)

* fix: updated roks quickstart ref arch

* updated roks-quickstart-diagram

* updated roks-quickstart-diagram

* updated roks-quickstart-diagram

* resolve review comments

* resolve review comments

* updated diagram

* updated diagram

* resolve review comments

* resolve review comments

* resolve review comments

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Co-authored-by: Khuzaima-Shakeel <[email protected]>
Co-authored-by: Vincent Burckhardt <[email protected]>

Author: 3 people