20.2: fix source button for quizzes

Author: miermontoto

package.json

@@ -7,7 +7,7 @@ layout: generic.njk
 <div id="button-container">
 	<a href="/content/collections/quizzes/{{title}}.data.json" alt="download json" class="button"><img src="/assets/icons/misc/download.svg" class="icon invert" alt="download icon">download json</a>
 	<a href="https://github.com/miermontoto/miermontoto/issues/new" alt="report an issue" class="button"><img src="/assets/icons/misc/bug.svg" class="icon invert" alt="bug icon">report an issue</a>
-	<a href="https://github.com/search?q=repo%3Amiermontoto%2Fmiermontoto+{{title}}.&type=code" alt="source code" class="button"><img src="/assets/icons/tech/git.svg" class="icon invert" alt="git icon">source</a>
+	<a href="https://github.com/search?q=repo%3Amiermontoto%2Fmiermontoto+{{eleventyNavigation.key}}.&type=code" alt="source code" class="button"><img src="/assets/icons/tech/git.svg" class="icon invert" alt="git icon">source</a>
 </div>
 <hr>
 <div id="results">