Update docs/install/containers/examples/nginx-volto-plone-zeo.md

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

Author: polyester

docs/install/containers/examples/nginx-volto-plone-zeo.md

@@ -111,7 +111,7 @@ services:
       ZEO_ADDRESS: db:8100
       ZEO_SHARED_BLOB_DIR: on   # otherwise the backend will create its own blob storage
     volumes:
-      - data:/data              #the backend and db need access to the same volume
+      - data:/data              # the backend and database need access to the same volume
     ports:
     - "8080:8080"
     depends_on: