Fix update url

ILSpy.Core/AboutPage.cs

@@ -51,7 +51,7 @@ namespace ICSharpCode.ILSpy
 			Display(decompilerTextView);
 		}
 		
-        static readonly Uri UpdateUrl = new Uri("https://github.com/jeffreye/AvaloniaILSpy/raw/master/updates.xml");
+        static readonly Uri UpdateUrl = new Uri("https://github.com/icsharpcode/AvaloniaILSpy/raw/master/updates.xml");
 		const string band = "stable";
 		
 		static AvailableVersionInfo latestAvailableVersion;

updates.xml

@@ -3,7 +3,7 @@
     <band id="alpha">
         <latestVersion>4.0.0.0</latestVersion>
         <downloadUrl>
-        https://ci.appveyor.com/project/jeffreye/avaloniailspy/build/artifacts
+        https://ci.appveyor.com/project/icsharpcode/avaloniailspy/build/artifacts
         </downloadUrl>
     </band>
 </updateInfo>