U4-1117 - Fixed any errors when renaming /umbraco to something else

src/Umbraco.Web/Models/ContentEditing/ContentTypeBasic.cs

@@ -48,7 +48,7 @@ namespace Umbraco.Web.Models.ContentEditing
             {
                 return IconIsClass
                            ? string.Empty
-                           : IOHelper.ResolveUrl("~/umbraco/images/umbraco/" + Icon);
+                           : IOHelper.ResolveUrl("images/umbraco/" + Icon);
             }
         }
 
@@ -83,4 +83,4 @@ namespace Umbraco.Web.Models.ContentEditing
             }
         }
     }
-}
+}