Add note to domain page, about enable ingress proxy (#67)

Author: VovaStelmashchuk

docs/dashboard/domains.md

@@ -28,6 +28,7 @@ You can click on `Verify DNS` button to verify if domain is correctly pointing t
 
 :::
 
+**Note:** To use the `Verify DNS` feature, ensure that **Enable Ingress Proxy** is turned on for the server.
 
 ### Issue SSL Certificate 🛡️
 
@@ -69,4 +70,4 @@ You can issue a SSL certificate automatically via Let's Encrypt or by manually p
     - Also, you may have purchased SSL certificate from a third party and you want to use it.
     - If you just want to use self-signed certificate, you can go with this option.
 
-    :::
+    :::

versioned_docs/version-2.2.x/dashboard/domains.md

@@ -28,6 +28,7 @@ You can click on `Verify DNS` button to verify if domain is correctly pointing t
 
 :::
 
+**Note:** To use the `Verify DNS` feature, ensure that **Enable Ingress Proxy** is turned on for the server.
 
 ### Issue SSL Certificate 🛡️
 
@@ -69,4 +70,4 @@ You can issue a SSL certificate automatically via Let's Encrypt or by manually p
     - Also, you may have purchased SSL certificate from a third party and you want to use it.
     - If you just want to use self-signed certificate, you can go with this option.
 
-    :::
+    :::