Fix bad digging time of cocoas

mods/ITEMS/mcl_cocoas/init.lua

@@ -108,7 +108,7 @@ local crop_def = {
 		},
 	},
 	groups = {
-		cocoa = 1, choppy=3, not_in_creative_inventory=1, dig_by_water = 1,
+		cocoa=1, choppy=3, oddly_breakable_by_hand=3, not_in_creative_inventory=1, dig_by_water=1,
 	},
 	sounds = mcl_sounds.node_sound_wood_defaults()
 }