docs: add Imk&Cc's homepage to showcase.md (#595)

Odaimoko

2023-11-28 660aae62e09ea1f5ec957149b78bfd01a85bd79f

 quartz/components/pages/TagContent.tsx

@@ -53,7 +53,7 @@
            return (
              <div>
                <h2>
                  <a class="internal tag-link" href={`./${tag}`}>
                  <a class="internal tag-link" href={`../tags/${tag}`}>
                    #{tag}
                  </a>
                </h2>