replace a few now-incorrect "Vcfv" prefixes in the comments

examples/problems/obstacleproblem.hh

@@ -110,7 +110,7 @@ SET_STRING_PROP(ObstacleBaseProblem, GridFile, "./data/obstacle_24x16.dgf");
 
 namespace Ewoms {
 /*!
- * \ingroup VcfvTestProblems
+ * \ingroup TestProblems
  *
  * \brief Problem where liquid water is first stopped by a
  *        low-permeability lens and then seeps though it.
@@ -231,7 +231,7 @@ public:
     }
 
     /*!
-     * \copydoc VcfvProblem::endTimeStep
+     * \copydoc FvBaseProblem::endTimeStep
      */
     void endTimeStep()
     {
@@ -264,7 +264,7 @@ public:
     //! \{
 
     /*!
-     * \copydoc VcfvProblem::name
+     * \copydoc FvBaseProblem::name
      */
     std::string name() const
     {
@@ -357,7 +357,7 @@ public:
     //! \{
 
     /*!
-     * \copydoc VcfvProblem::boundary
+     * \copydoc FvBaseProblem::boundary
      */
     template <class Context>
     void boundary(BoundaryRateVector &values, const Context &context,
@@ -381,7 +381,7 @@ public:
     //! \{
 
     /*!
-     * \copydoc VcfvProblem::initial
+     * \copydoc FvBaseProblem::initial
      */
     template <class Context>
     void initial(PrimaryVariables &values, const Context &context, int spaceIdx,
@@ -392,7 +392,7 @@ public:
     }
 
     /*!
-     * \copydoc VcfvProblem::source
+     * \copydoc FvBaseProblem::source
      *
      * For this problem, the source term of all components is 0
      * everywhere.