Corrected usage message for maze.js to say width instead of height

CHANGELOG.txt

@@ -12,6 +12,7 @@
  - Added bPermissions support
  - Update for new events system
  - Fixed /scriptname.js and no-double-slash settings not working
+ - Corrected usage message for maze.js
 
 5.1.1:
  - Fixed some compatibility issues with SpoutPlugin

craftscripts/maze.js

@@ -20,7 +20,7 @@
 importPackage(Packages.com.sk89q.worldedit);
 importPackage(Packages.com.sk89q.worldedit.blocks);
 
-context.checkArgs(1, -1, "<block> [width] [height]");
+context.checkArgs(1, -1, "<block> [width] [length]");
 
 var sess = context.remember();