Add version and fix data

public/data/weapons/wotan-s-cleaver.json

@@ -0,0 +1,18 @@
+{
+  "id": "wotan-s-cleaver",
+  "name": "Wotan's Cleaver",
+  "category": "greatsword",
+  "atk": 234,
+  "crt": 28,
+  "rarity": 5,
+  "skills": [
+    {
+      "name": "Death Gaze",
+      "description": "[SP: 24][CD: 18s] Unleashes a narrow-angle frontal sweeping laser blast that deals multiple hits and inflicts 89 Fire DMG per hit. Hit enemies then explode, dealing 717 Fire DMG to surrounding enemies in a small AOE and igniting them, dealing 89 Fire DMG every 0.5s for 3s."
+    },
+    {
+      "name": "Thermal Power",
+      "description": "Attacks deal an additional 95 Fire DMG."
+    }
+  ]
+}