Fixed typo virual to virtual

Author: ehvs

networking/enable-cluster-wide-proxy.adoc

@@ -9,7 +9,7 @@ Production environments can deny direct access to the Internet and instead have
 
 [IMPORTANT]
 ====
-The cluster-wide proxy is only supported if you used a user-provisioned infrastructure installation or provide your own networking, such as a virtual private cloud or virual network, for a supported provider.
+The cluster-wide proxy is only supported if you used a user-provisioned infrastructure installation or provide your own networking, such as a virtual private cloud or virtual network, for a supported provider.
 ====
 
 == Prerequisites