Sparkplug logo update to include the ® (registered) symbol
*Created by: ChristieWittEclipse*
Please update the first Sparkplug logo instance on the website (top left side) to include the ® (registered) symbol on https://sparkplug.eclipse.org/
I've attached the logo and Sharons approval email.
[sparkplug-update.zip](https://github.com/EclipseFdn/sparkplug.eclipse.org/files/4256888/sparkplug-update.zip)
issue