message: docs: Adds NgModule into back-ticks
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diff: @@ -7,7 +7,7 @@ A basic understanding of the following:
  <hr />
  -An NgModule describes how the application parts fit together.
  +An `NgModule` describes how the application parts fit together.
  Every application has at least one Angular module, the _root_ module
  that you bootstrap to launch the application.
  By convention, it is usually called `AppModule`.
  @@ -109,7 +109,7 @@ The following example, named `ItemDirective` is the default directive structure
  <code-example path="bootstrapping/src/app/item.directive.ts" region="directive" header="src/app/item.directive.ts"></code-example>
  The key point here is that you have to export it so you can import it elsewhere. Next, import it
  -into the NgModule, in this example `app.module.ts`, with a JavaScript import statement:
  +into the `NgModule`, in this example `app.module.ts`, with a JavaScript import statement:
  <code-example path="bootstrapping/src/app/app.module.ts" region="directive-import" header="src/app/app.module.ts"></code-example>
  