fix typo in doc
diff --git a/doc/CoeffwiseMathFunctionsTable.dox b/doc/CoeffwiseMathFunctionsTable.dox
index 3ae9420..c39a4bf 100644
--- a/doc/CoeffwiseMathFunctionsTable.dox
+++ b/doc/CoeffwiseMathFunctionsTable.dox
@@ -271,7 +271,7 @@
 <tr>
   <td class="code">
   \anchor cwisetable_atan
-  a.\link ArrayBase::atan tan\endlink(); \n
+  a.\link ArrayBase::atan atan\endlink(); \n
   \link Eigen::atan atan\endlink(a);
   </td>
   <td>computes arc tangent (\f$ \tan^{-1} a_i \f$)</td>