Spooky hallow: update description

Update board description

Author: phellen007

_maps/spookyhallow/spookyhallow.yaml

@@ -1,7 +1,7 @@
 name:
   en: Spooky Hallow
 desc:
-  en: The home turf of the Ghost Gang. Pac-Man once chased the ghosts here to rescue Mr. Cookie's recipe. But not without awakening a slumbering beast that lies within the pumpkin patch...2 vacant plots included.
+  en: The home turf of the Ghost Gang. Pac-Man once chased the ghosts here to rescue Mr. Cookie's recipe. But not without awakening a slumbering beast that lies within the pumpkin patch...4 vacant plots included.
 ruleSet: Standard
 theme: DragonQuest
 initialCash: 2200