add missing ref to a.zeta(b)
diff --git a/doc/CoeffwiseMathFunctionsTable.dox b/doc/CoeffwiseMathFunctionsTable.dox
index 12a565b..af12512 100644
--- a/doc/CoeffwiseMathFunctionsTable.dox
+++ b/doc/CoeffwiseMathFunctionsTable.dox
@@ -507,7 +507,8 @@
<tr>
<td class="code">
\anchor cwisetable_zeta
- \link Eigen::zeta zeta\endlink(a,b);
+ \link Eigen::zeta zeta\endlink(a,b); \n
+ a.\link ArrayBase::zeta zeta\endlink(b);
</td>
<td><a href="https://en.wikipedia.org/wiki/Hurwitz_zeta_function">Hurwitz zeta function</a>
\n \f$ \zeta(a_i,b_i)=\sum_{k=0}^{\infty}(b_i+k)^{\text{-}a_i} \f$</td>