module(9) man page tweaks

[Michael McConville <mmcconv1%sccs.swarthmore.edu@localhost>]

Index: share/man/man9/module.9
===================================================================
RCS file: /cvsroot/src/share/man/man9/module.9,v
retrieving revision 1.37
diff -u -p -r1.37 module.9
--- share/man/man9/module.9	4 Jun 2015 01:58:30 -0000	1.37
+++ share/man/man9/module.9	1 Oct 2015 19:09:15 -0000
@@ -74,7 +74,7 @@ the kernel and reboot.
 Modules can be loaded from within the kernel image, provided by the boot
 loader, or loaded from the file system.
 .Pp
-Two data types are relevant for
+Two data types comprise a
 .Nm :
 .Bl -enum -offset indent
 .It
@@ -84,10 +84,13 @@ type provides storage to describe a modu
 .It
 The
 .Vt modinfo_t
-type resides within the module itself, and contains module header info.
+type resides within
+.Vt module_t
+and contains module header info.
 .El
 .Pp
-The module subsystem is protected by the global kernconfig_mutex.
+The module subsystem is protected by the global
+.Va kernconfig_mutex .
 .Sh FUNCTIONS
 .Bl -tag -width abcd
 .It Fn MODULE "class" "name" "required"