Fix missing ;

Author: linkdotnet

docs/async_await.md

@@ -306,7 +306,7 @@ public class MyClass
         InitializeAsync().GetAwaiter().GetResult();
     }
 
-    private async Task InitializeAsync() => await LoadDataAsync()
+    private async Task InitializeAsync() => await LoadDataAsync();
 ```
 
 ✅ **Good**: Option 1 - Static asynchronous factory method:
@@ -323,13 +323,13 @@ public class MyClass
         return instance;
     }
 
-    private async Task InitializeAsync() => await LoadDataAsync()
+    private async Task InitializeAsync() => await LoadDataAsync();
 ```
 
 ✅ **Good**: Option 2 - Separate asynchronous initialization method:
 
 ```csharp
 public class MyClass
 {
-    public async Task InitializeAsync() => await LoadDataAsync()
+    public async Task InitializeAsync() => await LoadDataAsync();
 ```