refactor: format the version to YYYY.NN

Signed-off-by: leo <longshuang@msn.cn>

Author: love-linger

src/Views/About.axaml.cs

@@ -19,13 +19,13 @@ public string Copyright
 
         public About()
         {
-            var ver = Assembly.GetExecutingAssembly().GetName().Version;
+            var assembly = Assembly.GetExecutingAssembly();
+            var ver = assembly.GetName().Version;
             if (ver != null)
-                Version = $"{ver.Major}.{ver.Minor}";
-            var attributes = Assembly.GetExecutingAssembly()
-                .GetCustomAttributes(typeof(AssemblyCopyrightAttribute), false);
-            if (attributes.Length > 0)
-                Copyright = ((AssemblyCopyrightAttribute)attributes[0]).Copyright;
+                Version = $"{ver.Major}.{ver.Minor:D2}";
+
+            var copyright = assembly.GetCustomAttribute<AssemblyCopyrightAttribute>();
+            Copyright = copyright?.Copyright;
 
             DataContext = this;
             InitializeComponent();