message: docs: fix broken link in singleton services doc
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diff: @@ -63,7 +63,7 @@ There are multiple ways to prevent this:
  <div class="alert is-helpful">
  -**Note:** There are two example apps where you can see this scenario; the more advanced <live-example noDownload>NgModules live example</live-example>, which contains `forRoot()` and `forChild()` in the routing modules and the `GreetingModule`, and the simpler <live-example name="lazy-loading-ngmodules" noDownload>Lazy Loading live example</live-example>. For an introductory explanation see the [Lazy Loading Feature Modules](guide/lazy-loading-ngmodules) guide.
  +**Note:** There are two example apps where you can see this scenario; the more advanced <live-example noDownload name="ngmodules">NgModules live example</live-example>, which contains `forRoot()` and `forChild()` in the routing modules and the `GreetingModule`, and the simpler <live-example name="lazy-loading-ngmodules" noDownload>Lazy Loading live example</live-example>. For an introductory explanation see the [Lazy Loading Feature Modules](guide/lazy-loading-ngmodules) guide.
  </div>
  