Added visible blog link

src/routes/blog/+layout.svelte

@@ -1,10 +1,13 @@
 <script lang="ts">
 import Navbar from "$lib/components/Navbar.svelte";
+import { page } from '$app/stores';  
 </script>
 
 <Navbar>
   <div slot="title">
-    <a href="/blog">Блог</a>
+    {#if $page.url.pathname !== '/blog'}
+      <a href="/blog">Назад</a>
+    {/if}
   </div>
 </Navbar>