Fix man page indentation

Was broken after the io engines.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/fio.1 b/fio.1
index 7c62293..26a4650 100644
--- a/fio.1
+++ b/fio.1
@@ -486,8 +486,8 @@
 .B e4defrag
 IO engine that does regular EXT4_IOC_MOVE_EXT ioctls to simulate defragment activity
 request to DDIR_WRITE event
-.TP
 .RE
+.P
 .RE
 .TP
 .BI iodepth \fR=\fPint