cursed katana shard no longer called "dark spoon shard" (#76605)

## About The Pull Request
https://github.com/tgstation/tgstation/pull/75948 changed the name of
the cursed shard and made the katana version a subtype...without
changing the name or desc of the shard
## Why It's Good For The Game
the dark shard from tendril loot will no longer have a stupid name and
tell you you're not supposed to have it
## Changelog
🆑
fix: The cursed katana shard you can get from tendril loot no longer
falsely tells you you're not supposed to have it
/🆑

code/modules/mining/lavaland/tendril_loot.dm

@@ -915,6 +915,8 @@
 	return
 
 /obj/item/organ/internal/cyberimp/arm/shard/katana
+	name = "dark shard"
+	desc = "An eerie metal shard surrounded by dark energies."
 	items_to_create = list(/obj/item/cursed_katana)
 
 /obj/item/organ/internal/cyberimp/arm/shard/katana/Retract()