message: docs: change `project` to `projected` for past tense
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diff: @@ -114,7 +114,7 @@ The following steps demonstrate a typical implementation of conditional content
  In the previous step, you added an `ng-template` element with a custom attribute, `appExampleZippyDirective`. This code provides the logic that Angular will use when it encounters that custom attribute. In this case, that logic instructs Angular to instantiate a template reference.
  -1. In the component you want to project content into, use `@ContentChild` to get the template of the project content.
  +1. In the component you want to project content into, use `@ContentChild` to get the template of the projected content.
  <code-example path="content-projection/src/app/app.component.ts" header="content-projection/src/app/app.component.ts" region="contentchild">
  </code-example>
  