message: Fix comment and remove obsolete mention of MFEM data.
diff: #include "axom/fmt.hpp"
  #include "axom/CLI11.hpp"
  -#ifndef AXOM_USE_MFEM
  - #error This example requires Axom to be configured with MFEM and the AXOM_ENABLE_MFEM_SIDRE_DATACOLLECTION option
  -#endif
  -#include "mfem.hpp"
  -
  #ifndef AXOM_USE_MPI
  #error This example requires Axom to be configured with MPI
  #endif
  @@ -491,7 +486,7 @@ public:
  fld->createViewString("association", "vertex");
  fld->createViewString("topology", m_topoGroups[dIdx]->getName());
  - // create views into a shared buffer for the coordinates, with stride NDIMS
  + // create views into a shared buffer for the coordinates, with stride DIM
  auto* buf = m_domainGroups[dIdx]
  ->getDataStore()
  ->createBuffer(sidre::detail::SidreTT<T>::id, DIM * SZ)
  @@ -783,7 +778,7 @@ class QueryMeshWrapper
  public:
  using Circle = primal::Sphere<double, 2>;
  - //!@brief Construct with MFEM mesh.
  + //!@brief Construct with blueprint mesh.
  QueryMeshWrapper(sidre::Group* group, const std::string& meshFilename)
  : m_queryMesh(group)
  {
  @@ -828,7 +823,7 @@ public:
  return rval;
  }
  - /// Saves the data collection (MFEM query mesh) to disk
  + /// Saves the mesh to disk
  void saveMesh(const std::string& filename)
  {
  SLIC_INFO(
  