change flags uri

src/app/app.component.html

@@ -119,9 +119,9 @@
 
 <mat-menu #language="matMenu">
   @for(lang of [
-    {name:'en',label:'English',picture:'https://rem.swopt.com/media/images/flags/GBR.png'},
-    {name:'zh',label:'简体中文',picture:'https://rem.swopt.com/media/images/flags/CHN.png'},
-    {name:'ms',label:'Melayu',picture:'https://rem.swopt.com/media/images/flags/MAS.png'}
+    {name:'en',label:'English',picture:'https://cdn.swopt.com/media/images/flags/GBR.png'},
+    {name:'zh',label:'简体中文',picture:'https://cdn.swopt.com/media/images/flags/CHN.png'},
+    {name:'ms',label:'Melayu',picture:'https://cdn.swopt.com/media/images/flags/MAS.png'}
   ];track $index) {
     <button mat-menu-item (click)="changeLanguage(lang.name)">
       <div class="language-flag" [style.background-image]="'url('+lang.picture+')'">&nbsp;</div>