add gallery link to navigation

src/components/organisms/Navigation.astro

···
             <Link href="/blog">Blog</Link>
         </li>
         <li>
+            <Link href="/gallery">Gallery</Link>
+        </li>
+        <li>
             <Link href={BLUESKY_LINK} target="_blank">
                 <iconify-icon icon={"fa6-brands:bluesky"} height={"1rem"}
                 ></iconify-icon> Bluesky