Fix docstring error

Signed-off-by: Fernando-Sanz <sanz.fernando172@gmail.com>

beluga_ros/include/beluga_ros/ndt_ellipsoid.hpp

@@ -61,9 +61,8 @@ void use_cell_size(const Eigen::Vector<int, 3>& position, double size, beluga_ro
 /// cell is not suitable for the rotation matrix creation.
 /**
  * \param grid A SparseValueGrid that contains cells representing obstacles.
- * \return A message with the ellipsoids or cubes.
- * \param[out] message Markers message to be assigned.
- * \param[out] cubes_generated Is set to true if there were problems with covariance matrices from cells.
+ * \param[out] message A MarkerArray that will contain the shapes
+ * \return A std::pair with the MarkerArray containing the shapes and a boolean indicating if at least one cube was generated.
  * \tparam MapType Container that maps from Eigen::Vector<int, NDim> to the type of the cell. See [SparseValueGrid]
  * (https://ekumen-os.github.io/beluga/packages/beluga/docs/_doxygen/generated/reference/html/classbeluga_1_1SparseValueGrid.html).
  * \tparam NDim Dimension of the grid.