Fix improper .Fx macro usage.

Differential Revision:	https://reviews.freebsd.org/D1158
Reviewed by:	wblock@
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation

usr.bin/man/man.1

@@ -61,23 +61,32 @@ restricts the search to the specific section of the manual.
 The sections of the manual are:
 .Bl -enum -offset indent -compact
 .It
-.Fx General Commands Manual
+.Fx
+General Commands Manual
 .It
-.Fx System Calls Manual
+.Fx
+System Calls Manual
 .It
-.Fx Library Functions Manual
+.Fx
+Library Functions Manual
 .It
-.Fx Kernel Interfaces Manual
+.Fx
+Kernel Interfaces Manual
 .It
-.Fx File Formats Manual
+.Fx
+File Formats Manual
 .It
-.Fx Games Manual
+.Fx
+Games Manual
 .It
-.Fx Miscellaneous Information Manual
+.Fx
+Miscellaneous Information Manual
 .It
-.Fx System Manager's Manual
+.Fx
+System Manager's Manual
 .It
-.Fx Kernel Developer's Manual
+.Fx
+Kernel Developer's Manual
 .El
 .Pp
 Options that

usr.sbin/bhyve/bhyve.8

@@ -70,7 +70,8 @@ Required for
 guests.
 .It Fl b
 Enable a low-level console device supported by
-.Fx kernels compiled with
+.Fx
+kernels compiled with
 .Cd "device bvmconsole" .
 This option will be deprecated in a future version.
 .It Fl c Ar numcpus