add missing sections, de-Xr non-existent page, properly space

punctuation..

Approved by:	re (joel)
MFC after:	3 days

share/man/man4/altera_avgen.4

@@ -56,11 +56,11 @@ entries configure the address, size, I/O disposition, and
 .Pa /dev
 device node name that will be used.
 The
-.Xr open ,
-.Xr read ,
-.Xr write ,
+.Xr open 2 ,
+.Xr read 2 ,
+.Xr write 2 ,
 and
-.Xr mmap
+.Xr mmap 2
 system calls (and variations) may be used on
 .Nm
 device nodes, subject to constraints imposed using

share/man/man4/rsu.4

@@ -35,9 +35,9 @@ place the following lines in your kernel configuration file:
 .Pp
 Alternatively, to load the driver as a module at boot time,
 place the following line in
-.Xr loader.conf 5:
+.Xr loader.conf 5 :
 .Bd -literal -offset indent
-.Xr if_rsu_load="YES"
+if_rsu_load="YES"
 .Ed
 .Pp
 After you have read the license in /usr/share/doc/legal/realtek

share/man/man8/picobsd.8

@@ -20,7 +20,7 @@ utility is a script which produces a minimal implementation of
 which typically fits on a small media such as a floppy disk,
 or can be downloaded as a
 single image file from some media such as CDROM, flash memory, or through
-.Xr etherboot .
+etherboot.
 .Pp
 The
 .Nm
@@ -64,7 +64,7 @@ kernel.
 This is the default behaviour, and is
 extremely useful as the kernel itself can be loaded,
 using
-.Xr etherboot
+etherboot
 or
 .Xr pxeboot 8 ,
 .\"
@@ -378,9 +378,7 @@ If the build is successful, the directory
 .Pa build_dir-bridge/
 will contain a
 .Pa kernel
-that can be downloaded with
-.Xr etherboot ,
-a floppy image called
+that can be downloaded with etherboot, a floppy image called
 .Pa picobsd.bin ,
 plus the products of the compilation in other directories.
 If you want to modify the source tree in
@@ -480,9 +478,7 @@ Booting from a floppy is normally rather slow (in the order of 1-2
 minutes), things are much faster if you store your image on
 a hard disk, Compact Flash, or CDROM.
 .Pp
-You can also use
-.Xr etherboot
-to load the preloaded, uncompressed kernel image
+You can also use etherboot to load the preloaded, uncompressed kernel image
 which is a byproduct of the
 .Nm
 build.

share/man/man9/firmware.9

@@ -254,8 +254,8 @@ IxNpeMicrocode.dat                      optional npe_fw                 \\
 .Pp
 Note that generating the firmware modules in this way requires
 the availability of the following tools:
-.Xr awk ,
-.Xr make ,
+.Xr awk 1 ,
+.Xr make 1 ,
 the compiler and the linker.
 .Sh SEE ALSO
 .Xr kld 4 ,

share/man/man9/vm_page_grab.9

@@ -64,7 +64,7 @@ function sleeps for any reason, the object lock is temporary dropped.
 The
 .Fn vm_page_grab
 supports all of the flags supported by
-.Xr vm_page_alloc .
+.Xr vm_page_alloc 9 .
 In addition,
 .Fn vm_page_grab
 supports the following flags: