man page: correct typoe

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/fio.1 b/fio.1
index ab2fae9..87bc6a0 100644
--- a/fio.1
+++ b/fio.1
@@ -1063,7 +1063,7 @@
 If given, write a bandwidth log of the jobs in this job file. Can be used to
 store data of the bandwidth of the jobs in their lifetime. The included
 fio_generate_plots script uses gnuplot to turn these text files into nice
-graphs. See \fBwrite_log_log\fR for behaviour of given filename. For this
+graphs. See \fBwrite_lat_log\fR for behaviour of given filename. For this
 option, the postfix is _bw.log.
 .TP
 .BI write_lat_log \fR=\fPstr