fix loadbalancer output format

Author: deepakswifty

src/ResourceManager/Network/Commands.Network/Microsoft.Azure.Commands.Network.format.ps1xml

@@ -445,8 +445,8 @@
                 <PropertyName>TagsTable</PropertyName>
               </ListItem>
               <ListItem>
-                <Label>PSFrontendIPConfigurations</Label>
-                <PropertyName>PSFrontendIPConfigurationsText</PropertyName>
+                <Label>FrontendIPConfigurations</Label>
+                <PropertyName>FrontendIPConfigurationsText</PropertyName>
               </ListItem>
               <ListItem>
                 <Label>BackendAddressPools</Label>