fix formatting errors

docs/plugins/dig.rst

@@ -21,6 +21,7 @@ Basic commands:
     specifying the designation priority with ``-p#``, ``-p #``, or ``p=#``,
     where ``#`` is a number from 1 to 7. If a priority is not specified, the
     priority selected in-game is used as the default.
+
 digcircle
 =========
 A command for easy designation of filled and hollow circles.
@@ -56,6 +57,7 @@ Examples:
         Dig a filled circle with diameter = 3.
 ``digcircle``
         Do it again.
+
 digtype
 =======
 For every tile on the map of the same vein type as the selected tile,
@@ -75,6 +77,7 @@ Options:
 :up:     up stairs
 :down:   down stairs
 :clear:  clear designation
+
 digexp
 ======
 This command is for :wiki:`exploratory mining <Exploratory_mining>`.

docs/plugins/filltraffic.rst

@@ -17,6 +17,7 @@ Example:
 
 ``filltraffic H``
   When used in a room with doors, it will set traffic to HIGH in just that room.
+
 alltraffic
 ==========
 Set traffic designations for every single tile of the map - useful for resetting

docs/plugins/zone.rst

@@ -131,6 +131,7 @@ Examples
 ``zone tocages count 50 own tame male not grazer``
    Stuff up to 50 owned tame male animals who are not grazers into cages built
    on the current default zone.
+
 autobutcher
 ===========
 Assigns lifestock for slaughter once it reaches a specific count. Requires that
@@ -222,6 +223,7 @@ add some new races with 'watch'. If you simply want to stop it completely use
 'autobutcher stop' instead. ::
 
     autobutcher unwatch ALPACA CAT
+
 autonestbox
 ===========
 Assigns unpastured female egg-layers to nestbox zones. Requires that you create