Fix tensor documentation.

unsupported/Eigen/CXX11/src/Tensor/TensorCostModel.h

@@ -15,14 +15,6 @@
 
 namespace Eigen {
 
-/** \class TensorEvaluator
- * \ingroup CXX11_Tensor_Module
- *
- * \brief A cost model used to limit the number of threads used for evaluating
- * tensor expression.
- *
- */
-
 // Class storing the cost of evaluating a tensor expression in terms of the
 // estimated number of operand bytes loads, bytes stored, and compute cycles.
 class TensorOpCost {
@@ -137,6 +129,13 @@ class TensorOpCost {
 // TODO(rmlarsen): Implement a policy that chooses an "optimal" number of theads
 // in [1:max_threads] instead of just switching multi-threading off for small
 // work units.
+/**
+ * \ingroup CXX11_Tensor_Module
+ *
+ * \brief A cost model used to limit the number of threads used for evaluating
+ * tensor expression.
+ *
+ */
 template <typename Device>
 class TensorCostModel {
  public: