Add pgEdge testimonial to End Users page (#388)

Signed-off-by: Floor Drees <[email protected]>

Author: FloorD

content/end_users/logo/pgedge.png

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+---
+title: pgEdge
+image: logo/pgedge.png
+homepage: https://www.pgedge.com/
+weight: 41
+---
+
+> _CloudNativePG gives us the mature, production-ready Postgres operator we can depend on. Using the pgEdge Helm chart, our customers can run either single-region setups or multi-region, active-active pgEdge Enterprise Postgres deployments, powered by CloudNativePG. By leaning on CloudNativePG for lifecycle management and day 2 operations, we can focus our energy on delivering advanced distributed Postgres capabilities instead of rebuilding core operational plumbing._ 
+\
+— Dave Page, VP of Engineering at pgEdge