add logout() in history component

src/app/dashboard/service-component-history/service-component-history.component.html

@@ -73,7 +73,7 @@
 <button class="menu-button"  mat-button [matMenuTriggerFor]="menuuser">{{username}}</button>
 <mat-menu #menuuser="matMenu">
   <button mat-menu-item>Profile</button>
-  <button mat-menu-item (click)="onLogout">Logout</button>
+  <button mat-menu-item (click)="onLogout()">Logout</button>
 </mat-menu>
 
 </mat-toolbar>