intel/fm10k:fix repeated words in comments

Delete the redundant word 'by'.
Delete the redundant word 'a'.

Signed-off-by: Jilin Yuan <[e-mail]>
Signed-off-by: Tony Nguyen <[e-mail]>

drivers/net/ethernet/intel/fm10k/fm10k_tlv.c

···
  *  @string: Pointer to location of destination string
  *
  *  This function pulls the string back out of the attribute and will place
- *  it in the array pointed by by string.  It will return success if provided
+ *  it in the array pointed by string.  It will return success if provided
  *  with a valid pointers.
  **/
 static s32 fm10k_tlv_attr_get_null_string(u32 *attr, unsigned char *string)
···
  *  @mbx: Unused mailbox pointer
  *
  *  This function is a default handler for unrecognized messages.  At a
- *  a minimum it just indicates that the message requested was
+ *  minimum it just indicates that the message requested was
  *  unimplemented.
  **/
 s32 fm10k_tlv_msg_error(struct fm10k_hw __always_unused *hw,