updating docs

dns/README.md

@@ -1,6 +0,0 @@
-## Setup AdGuard Sync credentials
-```bash
-kubectl create secret generic adguardhome-password \ 
-    --from-literal=password='your_adguardhome_password' \ 
-    --from-literal=username='your_adguardhome_username' -n dns
-```