Rename Shivangi's photo, too, for consistency

index.html

@@ -171,7 +171,7 @@
     }
 
     const VOLUNTEERS = [
-      { firstName: 'Shivangi', lastName: 'Singh', linkedin: 'https://www.linkedin.com/in/shivangi-singh66/', photo: 'photos/shivangi-singh.jpg', initials: 'SS', color: 'bg-electric' },
+      { firstName: 'Shivangi', lastName: 'Singh', linkedin: 'https://www.linkedin.com/in/shivangi-singh66/', photo: 'photos/shivangi-singh.jpeg', initials: 'SS', color: 'bg-electric' },
       { firstName: 'Prachi', lastName: 'Jethava', linkedin: 'https://linkedin.com/in/prachijethava/', photo: 'photos/prachi-jethava.jpeg', initials: 'PJ', color: 'bg-rose-300', focus: '50% 15%' }
     ];