i copied .Fd just like everybody else. use .In

src/lib/libutil/bcrypt_pbkdf.3

@@ -1,4 +1,4 @@
-.\"	$OpenBSD: bcrypt_pbkdf.3,v 1.3 2013/06/04 06:39:11 jmc Exp $
+.\"	$OpenBSD: bcrypt_pbkdf.3,v 1.4 2013/06/05 04:01:53 tedu Exp $
 .\"
 .\" Copyright (c) 2012 Ted Unangst <tedu@openbsd.org>
 .\"
@@ -14,14 +14,14 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: June 4 2013 $
+.Dd $Mdocdate: June 5 2013 $
 .Dt BCRYPT_PBKDF 3
 .Os
 .Sh NAME
 .Nm bcrypt_pbkdf
 .Nd bcrypt password-based key derivation function
 .Sh SYNOPSIS
-.Fd #include <util.h>
+.In util.h
 .Ft int
 .Fn bcrypt_pbkdf "const char *pass" "size_t pass_len" "const uint8_t *salt" \
     "size_t salt_len" "uint8_t *key" "size_t key_len" "unsigned int rounds"