poll.2: ffix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man2/poll.2

@@ -131,11 +131,11 @@ argument specifies the number of milliseconds that
 .BR poll ()
 should block waiting for a file descriptor to become ready.
 The call will block until either:
-.IP * 3
+.IP \(bu 2
 a file descriptor becomes ready;
-.IP *
+.IP \(bu
 the call is interrupted by a signal handler; or
-.IP *
+.IP \(bu
 the timeout expires.
 .PP
 Note that the
@@ -165,14 +165,14 @@ There is data to read.
 There is some exceptional condition on the file descriptor.
 Possibilities include:
 .RS
-.IP * 3
+.IP \(bu 2
 There is out-of-band data on a TCP socket (see
 .BR tcp (7)).
-.IP *
+.IP \(bu
 A pseudoterminal master in packet mode has seen a state change on the slave
 (see
 .BR ioctl_tty (2)).
-.IP *
+.IP \(bu
 A
 .I cgroup.events
 file has been modified (see