Fix syntax errors

Author: henrycatalinismith

docs/index.html

@@ -83,7 +83,7 @@ <h2>
           </small>
         </h2>
         <p>
-          <a href="{{ "{{site.categories.changelog.first.permalink}}" | relative_url }}">
+          <a href="{{ site.categories.changelog.first.permalink | relative_url }}">
             {{site.categories.changelog.first.summary}}
           </a>
         </p>
@@ -94,7 +94,7 @@ <h2>
       <h3>
         {{site.categories.news.first.title}}
         <small>
-          <a href="{{ "{{site.categories.news.first.url}}" | relative_url }}">
+          <a href="{{ site.categories.news.first.url | relative_url }}">
             {{site.categories.news.first.date | date: '%Y-%m-%d'}}
           </a>
         </small>