Update docs/install/containers/examples/traefik-volto-plone-varnish.md

Co-authored-by: Steve Piercy <web@stevepiercy.com>

Author: polyester

docs/install/containers/examples/traefik-volto-plone-varnish.md

@@ -1,7 +1,7 @@
 ---
 myst:
   html_meta:
-    "description": "Basic Plone 6 setup with only one backend, a ZEO server and data being persisted in a Docker volume."
+    "description": "Basic Plone 6 setup with only one backend, a ZEO server, and data being persisted in a Docker volume."
     "property=og:description": "Basic Plone 6 setup with only one backend, a ZEO server and data being persisted in a Docker volume."
     "property=og:title": "Traefik Proxy, Frontend, Backend, Varnish container example"
     "keywords": "Plone 6, Container, Docker, Traefik Proxy, Frontend, Backend, Varnish"