Update archive-single.html

Author: zyaocoder

_includes/archive-single.html

@@ -51,9 +51,9 @@
         <h2>{{title}}</h2>
         <p> {{post.authors}}  </p>
         <!-- <a class="w3-button btn w3-white w3-text-blue w3-border" href="https://simple-bev.github.io/">project page</a> -->
-        {% if post.paperurl and post.codeurl and if post.arxivurl and post.biburl %}
+        {% if post.paperurl and post.codeurl and post.arxivurl and post.biburl %}
           <p><a  href="{{post.paperurl}}">[Paper]</a><a  href="{{post.codeurl}}">[Code]</a><a  href="{{post.arxivurl}}">[arXiv]</a><a  href="{{post.biburl}}">[BibTeX]</a></p>
-        {% elsif post.paperurl if post.arxivurl and post.biburl %}
+        {% elsif post.paperurl and post.arxivurl and post.biburl %}
           <p><a  href="{{post.paperurl}}">[Paper]</a><a  href="{{post.arxivurl}}">[arXiv]</a><a  href="{{post.biburl}}">[BibTeX]</a></p>
         {% elsif post.paperurl and post.biburl %}
           <p><a  href="{{post.paperurl}}">[Paper]</a><a  href="{{post.biburl}}">[BibTeX]</a></p>