Fix an URL typo

A bit too much copy/pasting going on, fix the HOWTO link.

Fixes: 67e7a517fed9 ("Remove all references to git.kernel.dk")
Signed-off-by: Jens Axboe <axboe@kernel.dk>

fio.1

diff --git a/fio.1 b/fio.1
index c84c8f4..9c4ff08 100644
--- a/fio.1
+++ b/fio.1
@@ -5294,6 +5294,6 @@
 .br
 These are typically located under `/usr/share/doc/fio'.
 .P
-\fBHOWTO\fR: \fIhttps://git.kernel.org/pub/scm/linux/kernel/git/axboe/fio.git/tree/REPORTING-BUGS\fR
+\fBHOWTO\fR: \fIhttps://git.kernel.org/pub/scm/linux/kernel/git/axboe/fio.git/tree/HOWTO\fR
 .br
 \fBREADME\fR: \fIhttps://git.kernel.org/pub/scm/linux/kernel/git/axboe/fio.git/tree/README.rst\fR