message: docs: edit suggestion to meet style guide
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diff: @@ -44,7 +44,8 @@ When you register a provider at the component level, you get a new instance of t
  class HeroListModule {}
  </code-example>
  -When you register a provider with a specific NgModule, the same instance of a service is available to all components in that NgModule (to understand all edge-cases, see [Hierarchical injectors](guide/hierarchical-dependency-injection)).
  +When you register a provider with a specific NgModule, the same instance of a service is available to all components in that NgModule.
  +To understand all edge-cases, see [Hierarchical injectors](guide/hierarchical-dependency-injection).
  * At the application root level, which allows injecting it into other classes in the application. This can be done by adding the `providedIn: 'root'` field to the `@Injectable` decorator:
  