message: docs: fix typo in sample
  Fixes
  PR Close
diff: <div formArrayName="aliases">
  <h3>Aliases</h3> <button (click)="addAlias()">Add Alias</button>
  - <div *ngFor="let address of aliases.controls; let i=index">
  + <div *ngFor="let alias of aliases.controls; let i=index">
  <!-- The repeated alias template -->
  <label>
  Alias:
  