Fixed tiny cosmetic in rTorrent settings.

src/NzbDrone.Core/Download/Clients/rTorrent/RTorrentSettings.cs

@@ -11,7 +11,7 @@ namespace NzbDrone.Core.Download.Clients.RTorrent
     {
         public RTorrentSettingsValidator()
         {
-            RuleFor(c => c.Host).NotEmpty();
+            RuleFor(c => c.Host).ValidHost();
             RuleFor(c => c.Port).InclusiveBetween(0, 65535);
             RuleFor(c => c.TvCategory).NotEmpty();
         }
@@ -37,7 +37,7 @@ namespace NzbDrone.Core.Download.Clients.RTorrent
         [FieldDefinition(1, Label = "Port", Type = FieldType.Textbox)]
         public int Port { get; set; }
 
-        [FieldDefinition(2, Label = "UrlBase", Type = FieldType.Textbox)]
+        [FieldDefinition(2, Label = "Url Base", Type = FieldType.Textbox, Advanced = true, HelpText = "Adds a suffix the rpc url, see http://[host]:[port]/[urlBase], by default this should be RPC2")]
         public string UrlBase { get; set; }
 
         [FieldDefinition(3, Label = "Use SSL", Type = FieldType.Checkbox)]