message: docs(core): clarify behavior
  Describe that doesn't search within other component templates (doesn't go across "component boundaries").
  PR Close
diff: @@ -132,6 +132,9 @@ export interface ContentChildrenDecorator {
  *
  * Content queries are set before the `ngAfterContentInit` callback is called.
  *
  + * Does not retrieve elements or directives that are in other components' templates,
  + * since a component's template is always a black box to its ancestors.
  + *
  * **Metadata Properties**:
  *
  * * **selector** - The directive type or the name used for querying.
  @@ -194,6 +197,9 @@ export interface ContentChildDecorator {
  *
  * Content queries are set before the `ngAfterContentInit` callback is called.
  *
  + * Does not retrieve elements or directives that are in other components' templates,
  + * since a component's template is always a black box to its ancestors.
  + *
  * **Metadata Properties**:
  *
  * * **selector** - The directive type or the name used for querying.
  