Improper example codes.

Since the doc is about *Standalone applications*, it's more accurate to use `createApplicationContext()` method.

Author: Youmoo

content/application-context.md

@@ -19,15 +19,15 @@ The standalone application object allows you to obtain a reference to any instan
 
 ```typescript
 @@filename()
-const app = await NestFactory.create(AppModule);
+const app = await NestFactory.createApplicationContext(AppModule);
 const tasksService = app.get(TasksService);
 ```
 
 To access the `TasksService` instance we use the `get()` method. The `get()` method acts like a **query** that searches for an instance in each registered module. Alternatively, for strict context checking, pass an options object with the `strict: true` property. With this option in effect, you have to navigate through specific modules to obtain a particular instance from the selected context.
 
 ```typescript
 @@filename()
-const app = await NestFactory.create(AppModule);
+const app = await NestFactory.createApplicationContext(AppModule);
 const tasksService = app.select(TasksModule).get(TasksService, { strict: true });
 ```