Improve wording on terse Total IO (KB) field

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/fio.1 b/fio.1
index 7eb2049..a699224 100644
--- a/fio.1
+++ b/fio.1
@@ -1087,7 +1087,7 @@
 .P
 Read status:
 .RS
-.B KB I/O, bandwidth \fR(KB/s)\fP, runtime \fR(ms)\fP
+.B Total I/O \fR(KB)\fP, bandwidth \fR(KB/s)\fP, runtime \fR(ms)\fP
 .P
 Submission latency:
 .RS
@@ -1109,7 +1109,7 @@
 .P
 Write status:
 .RS
-.B KB I/O, bandwidth \fR(KB/s)\fP, runtime \fR(ms)\fP
+.B Total I/O \fR(KB)\fP, bandwidth \fR(KB/s)\fP, runtime \fR(ms)\fP
 .P
 Submission latency:
 .RS