Fix one typo.

git-svn-id: https://svn.dealii.org/trunk@17955 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/examples/step-23/doc/results.dox b/deal.II/examples/step-23/doc/results.dox
index 1540a35ba7ac2b332c2d60014d1e624542062c5f..0d7b30b5bdf1f7320c3b0dd92d23b2e54f3ba4fc 100644 (file)
--- a/deal.II/examples/step-23/doc/results.dox
+++ b/deal.II/examples/step-23/doc/results.dox
@@ -98,7 +98,7 @@ If you want to explore a bit, try out some of the following things:
      \nabla \cdot
      a(x) \nabla u = f,
   @f]
-  where $\rho(x)$ is the density of the material, and $a(x)$ related to the
+  where $\rho(x)$ is the density of the material, and $a(x)$ is related to the
   stiffness coefficient. The wave speed is then $c=\sqrt{a/\rho}$.
 
   To make such a change, we would have to compute the mass and Laplace