Merge #1570

1570: Update webmail.yaml r=mergify[bot] a=DerH4NNES

Duplicated "ports:"

## What type of PR?

bug-fix

## What does this PR do?
fixes service specs
### Related issue(s)
/

Co-authored-by: Sascha Hannes <saschahannes@web.de>

docs/kubernetes/mailu/webmail.yaml

@@ -52,7 +52,6 @@ spec:
     role: mail
     tier: frontend
   ports:
-  ports:
   - name: http
     port: 80
     protocol: TCP