Fix craft guide for alloy cooking et al

A typo in commit d55ecc39f9 made recipes
for alloy cooking, compressing, and all other craft types sharing that
machine code, to be shown with three ingredient slots instead of the
correct one or two.

technic/machines/register/recipes.lua

@@ -5,7 +5,7 @@ function technic.register_recipe_type(typename, desc, numitems)
 	if unified_inventory and unified_inventory.register_craft_type then
 		unified_inventory.register_craft_type(typename, {
 			description = desc,
-			height = numtiems,
+			height = numitems,
 			width = 1,
 		})
 	end