Update mod.conf

adding optional depends toolranks

mod.conf

@@ -1,4 +1,4 @@
 name = nether
 description = Adds a deep underground realm with different mapgen that you can reach with obsidian portals.
 depends = stairs, default
-optional_depends = technic, moreblocks, mesecons, loot, dungeon_loot, doc_basics, fire, climate_api, ethereal, xpanes, walls
+optional_depends = toolranks, technic, moreblocks, mesecons, loot, dungeon_loot, doc_basics, fire, climate_api, ethereal, xpanes, walls