fix typo

bookchapter.html

@@ -78,7 +78,7 @@ <h4> Elimination and leading term computations </h4>
 
             Elimination computations were run in both Singular (Version 4.2.1-dev) and OSCAR (Version 0.11.2). OSCAR computations were run as described in the article, Singular source code for additional computations can be found here.
             <ul>
-            <li><a href="/" download> Singular code for additional eliminations</a></li>
+            <li> Singular code for additional eliminations</li>
             <li><a href="https://victoriaschleis.github.io/bookchapter_supmat/cross_verification_results.zip" download> Results of cross-verification elimination computations (zip-file)</a></li>
             <li><a href="https://victoriaschleis.github.io/bookchapter_supmat/bookchapter_supmat/leading_terms.jl" download> OSCAR code for computing leading terms</a></li> 
             <li><a href="https://victoriaschleis.github.io/bookchapter_supmat/bookchapter_supmat/XZ-Projection.zip" download> Newton subdivisions of the xz-projection (zip-file)</a></li>