message: BuildNormalConstraints: fix documentation of arguments.
diff: @@ -449,6 +449,10 @@ private:
  @param[out] constraint_rowstarts The rowstarts for separately
  eliminated constraints, possible
  input to EliminationCGSolver
  + @param[in] parallel Indicate that fespace is actually a
  + ParFiniteElementSpace and the numbering
  + in the returned matrix should be based
  + on truedofs.
  @return a constraint matrix
  */
  