Update supplementary_style_guide/introduction/whats-new.adoc

Co-authored-by: Andrea Hoffer <bergerhoffer@users.noreply.github.com>

Author: mportman12

supplementary_style_guide/introduction/whats-new.adoc

@@ -47,7 +47,7 @@ To view the history of changes from 2020 through 2022, see the link:https://gith
 
 .Style guidance
 * *xref:external-links[External links]*: Added guidance to avoid using URL shorteners
-* *xref:shortdesc[Short descriptions]*: Added guidance to avoid starting modules with admonitions, including Technology Preview admonitions.
+* *xref:shortdesc[Short descriptions]*: Added guidance to avoid starting modules with admonitions, including Technology Preview admonitions
 
 [[june-2024]]
 === June 2024