target: Fix spelling mistake and unwrap multi-line text

Trivial fix to spelling mistake "Obselete" to "Obsolete"
in error message and also turn multi-line text into one
line.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>

drivers/target/target_core_pr.c

@@ -255,8 +255,7 @@ target_scsi2_reservation_reserve(struct se_cmd *cmd)
 
 	if ((cmd->t_task_cdb[1] & 0x01) &&
 	    (cmd->t_task_cdb[1] & 0x02)) {
-		pr_err("LongIO and Obselete Bits set, returning"
-				" ILLEGAL_REQUEST\n");
+		pr_err("LongIO and Obsolete Bits set, returning ILLEGAL_REQUEST\n");
 		return TCM_UNSUPPORTED_SCSI_OPCODE;
 	}
 	/*