examples/k8s: reference quay.io/dexidp

Signed-off-by: Stephan Renatus <srenatus@chef.io>

examples/k8s/dex.yaml

@@ -12,7 +12,7 @@ spec:
         app: dex
     spec:
       containers:
-      - image: quay.io/coreos/dex:v2.10.0
+      - image: quay.io/dexidp/dex:v2.10.0
         name: dex
         command: ["/usr/local/bin/dex", "serve", "/etc/dex/cfg/config.yaml"]