12993.md

Fix shorthand properties formatting (#12993 by @sosukesuzuki, @fisker)

<!-- Input -->
<ng-container *ngTemplateOutlet="someTmpl; context: { app }"></ng-container>

<!-- Prettier stable -->
<ng-container
  *ngTemplateOutlet="someTmpl; context: { app: this.app }"
></ng-container>

<!-- Prettier main -->
<ng-container *ngTemplateOutlet="someTmpl; context: { app }"></ng-container>