message: Improve documentation for AssembleMF.
diff: @@ -96,8 +96,8 @@ public:
  // Vector &emat);
  /// Method defining fully matrix-free assembly.
  - /** The result of is stored internally so that it can be
  - used later in the methods AddMultMF() and AddMultTransposeMF(). */
  + /** The result of fully matrix-free assembly is stored internally so that it
  + can be used later in the methods AddMultMF() and AddMultTransposeMF(). */
  virtual void AssembleMF(const FiniteElementSpace &fes);
  /** Perform the action of integrator on the input @a x and add the result to
  