fix typo in step-52

diff --git a/examples/step-52/step-52.cc b/examples/step-52/step-52.cc
index 774b7e6b83578544dcc72f8ae45c64d2d16f0a6d..dfef5db0df8772ef67cd127ed70bb43906e91794 100644 (file)
--- a/examples/step-52/step-52.cc
+++ b/examples/step-52/step-52.cc
@@ -544,7 +544,7 @@ namespace Step52
   // Embedded methods use a guessed time step. If the error using this time step
   // is too large, the time step will be reduced. If the error is below the
   // threshold, a larger time step will be tried for the next time step.
-  // </code>delta_t_guess</code> is the guessed time step produced by the embedded method.
+  // <code>delta_t_guess</code> is the guessed time step produced by the embedded method.
   unsigned int Diffusion::embedded_explicit_method(const TimeStepping::runge_kutta_method method,
                                                    const unsigned int                     n_time_steps,
                                                    const double                           initial_time,