Add mythical cape and teak kitchen table to skill calc (#4341)

- Add Mounted Mythical Cape to skill calculator
- Change 'Teak Table' at level 52 to 'Teak Kitchen Table'

runelite-client/src/main/resources/net/runelite/client/plugins/skillcalculator/skill_construction.json

@@ -642,6 +642,12 @@
       "name": "Demon Lectern",
       "xp": 120
     },
+    {
+      "level": 47,
+      "icon": 21913,
+      "name": "Mounted Mythical Cape",
+      "xp": 370
+    },
     {
       "level": 48,
       "icon": 5755,
@@ -687,7 +693,7 @@
     {
       "level": 52,
       "icon": 8118,
-      "name": "Teak Table",
+      "name": "Teak Kitchen Table",
       "xp": 270
     },
     {