Fix randomly added string at start of documentation, a=chris

diff --git a/en-US/pages/documentation.thtml b/en-US/pages/documentation.thtml
index 4441fe5..81bada5 100755
--- a/en-US/pages/documentation.thtml
+++ b/en-US/pages/documentation.thtml
@@ -1,4 +1,4 @@
-Activity element looks like<div class="docs">
+<div class="docs">
 <h1>Yioop Documentation v 0.98</h1>
     <h2 id='toc'>Table of Contents</h2>
     <ul>