message: Corrects matTooltip and corresponding text
diff: <div>
  - <img *ngFor="let image of album; let i=index" [src]="image.src" (click)="openLB(i)" class="lightbox-cstm--preview" mat-tooltip="Rightclick and choose 'save as' to download this image">
  + <img *ngFor="let image of album; let i=index" [src]="image.src" (click)="openLB(i)" class="lightbox-cstm--preview" matTooltip="Right-click and choose 'Save image as' to download this image">
  </div>
  <ul>
  <ng-container *ngFor="let file of fileUnit.files;">
  