The headers of two of the code-snippets in the [Input section](https://angular.io/start#input) of the "Getting Started" guide incorrectly referenced an non-existent file path (`src/app/product-list/product-alerts.component.ts`). This commit fixes the headers to show the correct file path (`src/app/product-alerts/product-alerts.component.ts`). Fixes #34320 PR Close #34321