Minor changes

frontend/src/app/components/footer/footer.component.ts

@@ -1,11 +1,12 @@
 import { Component } from '@angular/core';
 import { MatIconModule } from '@angular/material/icon';
+import { MatTooltipModule } from '@angular/material/tooltip';
 import { RouterModule } from '@angular/router';
 
 @Component({
   selector: 'app-footer',
   standalone: true,
-  imports: [MatIconModule, RouterModule],
+  imports: [MatIconModule, MatTooltipModule, RouterModule],
   templateUrl: './footer.component.html',
   styleUrl: './footer.component.scss'
 })