[doxygen][co2] do not doc dumux namespace

dumux/porousmediumflow/co2/model.hh

@@ -18,35 +18,29 @@
  *****************************************************************************/
 /*!
  * \file
- * \ingroup CO2Model
- * \brief Adaption of the fully implicit scheme to the CO2Model model.
- */
-
-#ifndef DUMUX_TWOP_TWOC_CO2_MODEL_HH
-#define DUMUX_TWOP_TWOC_CO2_MODEL_HH
-
-#include <dumux/common/properties.hh>
-#include <dumux/porousmediumflow/2p2c/model.hh>
-#include "volumevariables.hh"
-
-/*!
  * \ingroup CO2Model
  * \brief Adaption of the non-isothermal two-phase two-component flow model to problems with CO2
  *
- *  TODO: Put a doxgyen link reference here
- *  See TwoPTwoCModel for reference to the equations used.
- *  The CO2 model is derived from the 2p2c model. In the CO2 model the phase switch criterion
+ *  See @ref TwoPTwoCModel for reference to the equations used.
+ *  The CO2 model is derived from the 2p2c model, however, in the CO2 model the phase switch criterion
  *  is different from the 2p2c model.
  *  The phase switch occurs when the equilibrium concentration
  *  of a component in a phase is exceeded, instead of the sum of the components in the virtual phase
  *  (the phase which is not present) being greater that unity as done in the 2p2c model.
  *  The CO2VolumeVariables do not use a constraint solver for calculating the mole fractions as is the
- *  case in the 2p2c model. Instead mole fractions are calculated in the FluidSystem with a given
+ *  case in the 2p2c model. Instead, mole fractions are calculated in the FluidSystem with a given
  *  temperature, pressure and salinity.
- *  The model is able to use either mole or mass fractions. The property useMoles can be set to either true or false in the
- *  problem file. Make sure that the according units are used in the problem setup. useMoles is set to false by default.
- *
+ *  The model is able to use either mole or mass fractions. The property useMoles can be set to either true or false,
+ *  but make sure that the according units are used in the problem setup. useMoles is set to false by default.
  */
+
+#ifndef DUMUX_TWOP_TWOC_CO2_MODEL_HH
+#define DUMUX_TWOP_TWOC_CO2_MODEL_HH
+
+#include <dumux/common/properties.hh>
+#include <dumux/porousmediumflow/2p2c/model.hh>
+#include "volumevariables.hh"
+
 namespace Dumux {
 namespace Properties {