coll/tuned: fix minor errors in comments

Signed-off-by: Joseph Schuchart <schuchart@icl.utk.edu>

ompi/mca/coll/tuned/coll_tuned_decision_dynamic.c

@@ -2,7 +2,7 @@
  * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
  *                         University Research and Technology
  *                         Corporation.  All rights reserved.
- * Copyright (c) 2004-2015 The University of Tennessee and The University
+ * Copyright (c) 2004-2020 The University of Tennessee and The University
  *                         of Tennessee Research Foundation.  All rights
  *                         reserved.
  * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
@@ -97,7 +97,7 @@ ompi_coll_tuned_allreduce_intra_dec_dynamic (const void *sbuf, void *rbuf, int c
  *
  *    Function:    - seletects alltoall algorithm to use
  *    Accepts:    - same arguments as MPI_Alltoall()
- *    Returns:    - MPI_SUCCESS or error code (passed from the bcast implementation)
+ *    Returns:    - MPI_SUCCESS or error code (passed from the alltoall implementation)
  */
 
 int ompi_coll_tuned_alltoall_intra_dec_dynamic(const void *sbuf, int scount,
@@ -238,7 +238,7 @@ int ompi_coll_tuned_barrier_intra_dec_dynamic(struct ompi_communicator_t *comm,
 /*
  *   bcast_intra_dec
  *
- *   Function:   - seletects broadcast algorithm to use
+ *   Function:   - selects broadcast algorithm to use
  *   Accepts:   - same arguments as MPI_Bcast()
  *   Returns:   - MPI_SUCCESS or error code (passed from the bcast implementation)
  */