Move properties, parameters, events, and concepts around manual sections

The pages moved as follows:
  zpool-features.{5 => 7}
  spl{-module-parameters.5 => .4}
  zfs{-module-parameters.5 => .4}
  zfs-events.5 => into zpool-events.8
  zfsconcepts.{8 => 7}
  zfsprops.{8 => 7}
  zpoolconcepts.{8 => 7}
  zpoolprops.{8 => 7}

Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Co-authored-by: Daniel Ebdrup Jensen <debdrup@FreeBSD.org>
Closes #12149
Closes #12212

man/man8/zfs-list.8

@@ -90,7 +90,7 @@ The property must be:
 One of the properties described in the
 .Sx Native Properties
 section of
-.Xr zfsprops 8
+.Xr zfsprops 7
 .It
 A user property
 .It
@@ -118,7 +118,7 @@ value of the property.
 The property must be one of the properties described in the
 .Sx Properties
 section of
-.Xr zfsprops 8
+.Xr zfsprops 7
 or the value
 .Sy name
 to sort by the dataset name.
@@ -158,5 +158,5 @@ displays only snapshots.
 .El
 .
 .Sh SEE ALSO
-.Xr zfs-get 8 ,
-.Xr zfsprops 8
+.Xr zfsprops 7 ,
+.Xr zfs-get 8