showing planetUML diagram in browser

some design documents embed planetUML codelet as UML diagram scripts. By default, these scripts show only code block like

@startuml

Alice --> Bob: Authentication Request

Bob --> Alice: Authentication Response

Alice --> Bob: Another authentication Request

Alice <-- Bob: Another authentication Response

@enduml

In order to make them rendered as UML diagrams, you need to install markdown diagram extension to the browser

• Chrome https://chrome.google.com/webstore/detail/markdown-diagrams/pmoglnmodacnbbofbgcagndelmgaclel/related?hl=en
• MS Edge https://microsoftedge.microsoft.com/addons/detail/markdown-diagrams/hceenoomhhdkjjijnmlclkpenkapfihe

the demo planetUML script block would show as