fix: TTA-115 fix error Type 'string' is not assignable to type 'void in login.component

Author: Abigail Cabascango

src/app/modules/login/login.component.ts

@@ -115,7 +115,7 @@ export class LoginComponent implements OnInit {
     }
   }
 
-  loginAuth(): void {
+  loginAuth(): string {
     return this.authUrl;
   }