MainWindow.xaml - simplify static bindings

HoverLinkBehaviour - Always use BeginInvoke unless there's an explicit reason for using a sync action
EnvironmentConverter - Minor inconsistencies

CefSharp.MinimalExample.Wpf/Behaviours/HoverLinkBehaviour.cs

@@ -1,12 +1,13 @@
 using CefSharp.Wpf;
 using System.Windows;
 using System.Windows.Interactivity;
+using System;
 
 namespace CefSharp.MinimalExample.Wpf.Behaviours
 {
     public class HoverLinkBehaviour : Behavior<ChromiumWebBrowser>
     {
-        // Using a DependencyProperty as the backing store for HoverLink.  This enables animation, styling, binding, etc...
+        // Using a DependencyProperty as the backing store for HoverLink. This enables animation, styling, binding, etc...
         public static readonly DependencyProperty HoverLinkProperty = DependencyProperty.Register("HoverLink", typeof(string), typeof(HoverLinkBehaviour), new PropertyMetadata(string.Empty));
 
         public string HoverLink
@@ -27,8 +28,8 @@ namespace CefSharp.MinimalExample.Wpf.Behaviours
         
         private void OnStatusMessageChanged(object sender, StatusMessageEventArgs e)
         {
-            var dp = sender as ChromiumWebBrowser;
-            dp.Dispatcher.Invoke(() => HoverLink = e.Value);
+            var chromiumWebBrowser = sender as ChromiumWebBrowser;
+            chromiumWebBrowser.Dispatcher.BeginInvoke((Action)(() => HoverLink = e.Value));
         }
     }
 }