tools(re): correct transposed field labels in the kit record diff

club_items.json's _record_map is authoritative: cardassetid is +0x1c and
assetId is +0x20. The probe had them the other way round, which made a correct
assetId 14/15 read out as an identical cardassetid and briefly supported the
wrong conclusion that assetId was not the art selector.

fifa17-recon/tools/live/diff_kit_records.py

@@ -60,8 +60,10 @@ root = q(owner + 0x160D8)
 FIELDS = {
     0x08: ("id", 8),
     0x18: ("resourceId/definitionId", 4),
-    0x1C: ("assetId", 4),
-    0x20: ("cardassetid", 4),
+    # Offsets per club_items.json `_record_map`, which is authoritative:
+    # cardassetid is +0x1c and assetId is +0x20 — NOT the other way round.
+    0x1C: ("cardassetid", 4),
+    0x20: ("assetId", 4),
     0x38: ("discardValue", 4),
     0x4C: ("cardtype", 4),
     0x50: ("cardsubtypeid", 4),