improve documentation

Co-Authored-By: davydden <davydden@gmail.com>

diff --git a/include/deal.II/base/incremental_function.h b/include/deal.II/base/incremental_function.h
index abd963e4238311d11bde366380db97aa8c2f42cd..0bce2c773c6f6630b01c710511759794b86db0b4 100644 (file)
--- a/include/deal.II/base/incremental_function.h
+++ b/include/deal.II/base/incremental_function.h
@@ -35,7 +35,7 @@ namespace Functions
    * delta_t)</code> denotes the function evaluated at time <code>t -
    * delta_t</code>. The decrement <code>delta_t</code> is set by the method
    * set_decrement(). The main application of this class is to transform a given
-   * Dirichlet boundary condition function into the incremental form, as is
+   * Dirichlet boundary condition function into incremental form, as is
    * required by some implementations of non-linear solution schemes.
    *
    * @ingroup functions