Update index.mdx

Author: adamwathan

src/pages/multi-line-truncation-with-tailwindcss-line-clamp/index.mdx

@@ -21,7 +21,7 @@ Sound familiar? If so, the line-clamp plugin is here to save your bacon.
 
 <p className="lead">
   A few weeks back we released{' '}
-  <a href="#">
+  <a href="https://github.com/tailwindlabs/tailwindcss-line-clamp">
     <code>@tailwindcss/line-clamp</code>
   </a>
   , an official Tailwind CSS plugin for truncating text to a specific number of lines.