Fixes duplicated UseMauiApp call in documentation

Removes a duplicated `UseMauiApp` call in the documentation for the Prism.Maui integration. This corrects the sample code and prevents potential confusion for developers following the guide.

Author: dansiegel

docs/platforms/maui/appbuilder.md

@@ -13,7 +13,7 @@ var builder = MauiApp.CreateBuilder();
 builder.UseMauiApp<App>();
 
 // Include UsePrism after UseMauiApp
-builder.UseMauiApp<App>()
+builder.UseMauiApp<App>();
 builder.UsePrism(prism =>
 {
  // configure prism
@@ -91,7 +91,7 @@ builder.UsePrism(prism =>
  .RegisterTypes(container => {
  // Register platform agnostic types
  });
-}
+});
 ```
 
 ### IServiceCollection Support

versioned_docs/version-9.0/platforms/maui/appbuilder.md

@@ -13,7 +13,7 @@ var builder = MauiApp.CreateBuilder();
 builder.UseMauiApp<App>();
 
 // Include UsePrism after UseMauiApp
-builder.UseMauiApp<App>()
+builder.UseMauiApp<App>();
 builder.UsePrism(prism =>
 {
  // configure prism
@@ -91,7 +91,7 @@ builder.UsePrism(prism =>
  .RegisterTypes(container => {
  // Register platform agnostic types
  });
-}
+});
 ```
 
 ### IServiceCollection Support