zfsprops-macos.8: fix formatting

to clean up the appearance and comply with `make mancheck`.

Author: ilovezfs

man/man8/zfsprops-macos.8

@@ -38,33 +38,58 @@
 .\" Copyright 2019 Joyent, Inc.
 .\" Copyright (c) 2019, Kjeld Schouten-Lebbing
 .\"
-.It Sy com.apple.browse Ns = Ns Sy on Ns | Ns Sy off
+.Dd April 29, 2021
+.Dt ZFSPROPS-MACOS 8
+.Os
+.
+.Sh NAME
+.Nm zfsprops-macos
+.Nd native properties of ZFS datasets specific to macOS
+.
+.Sh DESCRIPTION
+These properties are like the native properties described in
+.Xr zfsprops 8
+but they are specific to macOS.
+.Pp
+The following native properties can be used to change the behavior of a ZFS
+dataset.
+.Bl -tag -width ""
+.It Xo
+.Sy com.apple.browse Ns = Ns Sy on Ns | Ns Sy off
+.Xc
 Equivalent to mount option
-.Sx browse/nobrowse.
+.Sy browse/nobrowse .
 This option indicates
 that the mount point should not be visible via the GUI (i.e., appear
 on the Desktop as a separate volume).  Setting it to off will result
 in Spotlight being unavailable for the specified mount point.
 The default value is
 .Sy off .
-.It Sy com.apple.ignoreowner Ns = Ns Sy on Ns | Ns Sy off
+.It Xo
+.Sy com.apple.ignoreowner Ns = Ns Sy on Ns | Ns Sy off
+.Xc
 Equivalent to mount option
-.Sx noowners.
+.Sy noowners .
 Ignore the ownership field for the entire volume.
 The default value is
 .Sy off .
-.It Sy com.apple.mimic Ns = Ns Sy hfs Ns | Ns Sy off
-Some applications check if the filesystem type is "hfs" and refuse to
-work with ZFS. In this situation, this property can be enabled and the
-filesystem type will be reported as "hfs".
+.It Xo
+.Sy com.apple.mimic Ns = Ns Sy hfs Ns | Ns Sy off
+.Xc
+Some applications check if the filesystem type is "hfs" and refuse to work with
+ZFS.
+In this situation, this property can be enabled and the filesystem type will be
+reported as "hfs".
 The default value is
 .Sy off .
-.It Sy com.apple.devdisk Ns = Ns Sy poolonly Ns | Ns Sy on Ns | Ns Sy off
-Create a /dev/diskX pseudo-disk for the mount, which has better
-compatibility with macOS UI. Due to the cost of creating a /dev/disk
-entry, the default value is set to 
-.Sx poolonly
+.It Xo
+.Sy com.apple.devdisk Ns = Ns Sy poolonly Ns | Ns Sy on Ns | Ns Sy off
+.Xc
+Create a /dev/diskX pseudo-disk for the mount, which has better compatibility
+with macOS UI.
+Due to the cost of creating a /dev/disk entry, the default value is set to
+.Sy poolonly
 as to only create an entry for the pool's root dataset.
-For lower datasets, set to 
-.Sx on .
-
+For lower datasets, set to
+.Sy on .
+.El