use absolute urls

src/header.html

@@ -7,15 +7,15 @@ <h2>Language Understanding and Knowledge Acquisition Lab</h2>
                <div class="navbar-inner">
 
                      <ul class="nav">
-                        <li id="nav-home"><a href="index.html">Home</a></li>
-                        <li id="nav-people"><a href="people.html">Group</a></li>
+                        <li id="nav-home"><a href="https://luka-group.github.io/index.html">Home</a></li>
+                        <li id="nav-people"><a href="https://luka-group.github.io/people.html">Group</a></li>
                         <!--li id="nav-research"><a href="research.html">Research</a></li-->
-                        <li id="nav-publication"><a href="publications.html">Publications</a></li>
+                        <li id="nav-publication"><a href="https://luka-group.github.io/publications.html">Publications</a></li>
                         <!--li><a href="news.html">News</a></li-->
-						<li id="nav-award"><a href="awards.html">Awards</a></li>
+						<li id="nav-award"><a href="https://luka-group.github.io/awards.html">Awards</a></li>
                         <!--li><a href="teaching.html">Teaching</a></li-->
-                        <li id="nav-talk"><a href="talks.html">Talks</a></li>
-						<li id="nav-open"><a href="openings.html">Openings</a></li>
+                        <li id="nav-talk"><a href="https://luka-group.github.io/talks.html">Talks</a></li>
+						<li id="nav-open"><a href="https://luka-group.github.io/openings.html">Openings</a></li>
                      </ul>
 
                </div>