minor typo correction

documentation.html

@@ -22,7 +22,7 @@ title: Amber Smalltalk - documentation
 
     <p>Amber includes the following features:</p>
     <ol>
-      <li>It is semantically and syntaxically equivalent to <a href="http://www.pharo-project.org">Pharo Smalltalk</a> (the implementation considered as the reference)</li>
+      <li>It is semantically and syntactically equivalent to <a href="http://www.pharo-project.org">Pharo Smalltalk</a> (the implementation considered as the reference)</li>
       <li>It is written in itself and compiles into efficient JavaScript</li>
       <li>A canvas API similar to <a href="http://www.seaside.st">Seaside</a> to generate HTML</li>
       <li>A <a href="http://www.jquery.com">jQuery</a> binding</li>