Fixed spelling of example share and fxed indention.
ha_example.cc:
  Fixed spelling of example and removed a few unneeded printf pieces.
my_base.h:
  Adde HA_ERR_NOT_IMPLEMENTED at Monty's request


include/my_base.h:
  Adde HA_ERR_NOT_IMPLEMENTED at Monty's request
sql/examples/ha_example.cc:
  Fixed spelling of example and removed a few unneeded printf pieces.
sql/examples/ha_example.h:
  Fixed spelling of example share and fxed indention.