Update prelaunch-live-email-templates.md

[JarbasHorst]

Replaced below with following.

[learn-build-service-prod[bot]]

Learn Build status updates of commit 9fab37e:

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Viva/glint/communicate/prelaunch-live-email-templates.md	:white_check_mark:Succeeded

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[scanum]

@sarahberg PR has been copyedited and is ready for final review, could you please check and merge? Thanks!

[scanum]

@Sarahberg PR has been copyedited and is ready for final review, could you please check and merge? Thanks!