ui: Remove old content

frontend/fic/src/lib/components/Header.svelte

@@ -49,7 +49,7 @@
         <a href="." style="max-width: 50%">
             {#if $challengeInfo && $challengeInfo.main_logo}
                 {#each $challengeInfo.main_logo as logo, i}
-                    <img src={logo.replace('$FILES$', base + '/files/')} alt={'Logo principal #' + i} class={'h-100' + (i > 0?' d-none d-md-inline ms-2':'')}>
+                    <img src={logo.replace('$FILES$/', base + '/files/')} alt={'Logo principal #' + i} class={'h-100' + (i > 0?' d-none d-md-inline ms-2':'')}>
                 {/each}
             {/if}
         </a>