Fix doxygen code style in FE_P1NC documentation

diff --git a/include/deal.II/fe/fe_p1nc.h b/include/deal.II/fe/fe_p1nc.h
index 585297c70b14d107c98cbee0bf37c851739c3ea0..a4c2cab16118e4c26289c2748b2d492c6390a209 100644 (file)
--- a/include/deal.II/fe/fe_p1nc.h
+++ b/include/deal.II/fe/fe_p1nc.h
@@ -236,7 +236,7 @@ DEAL_II_NAMESPACE_OPEN
  * The original paper for the P1 nonconforming element is
  * accessible at http://epubs.siam.org/doi/abs/10.1137/S0036142902404923
  * and has the following complete reference:
- * @code(.bib)
+ * @code{.bib}
  * @article{park2003p,
  *   title =     {P 1-nonconforming quadrilateral finite element methods for second-order elliptic problems},
  *   author =    {Park, Chunjae and Sheen, Dongwoo},