fixed bug with null hit_point fields

Author: calumbell

data/v2/wizards-of-the-coast/srd-2024/CharacterClass.json

@@ -221,7 +221,7 @@
   "fields": {
     "caster_type": "NONE",
     "document": "srd-2024",
-    "hit_dice": "",
+    "hit_dice": null,
     "name": "Life Domain",
     "primary_abilities": [],
     "saving_throws": [],
@@ -234,7 +234,7 @@
   "fields": {
     "caster_type": "NONE",
     "document": "srd-2024",
-    "hit_dice": "",
+    "hit_dice": null,
     "name": "Champion",
     "primary_abilities": [],
     "saving_throws": [],
@@ -247,7 +247,7 @@
   "fields": {
     "caster_type": "NONE",
     "document": "srd-2024",
-    "hit_dice": "",
+    "hit_dice": null,
     "name": "Warrior of the Open Hand",
     "primary_abilities": [],
     "saving_throws": [],
@@ -260,7 +260,7 @@
   "fields": {
     "caster_type": "NONE",
     "document": "srd-2024",
-    "hit_dice": "",
+    "hit_dice": null,
     "name": "Oath of Devotion",
     "primary_abilities": [],
     "saving_throws": [],
@@ -273,7 +273,7 @@
   "fields": {
     "caster_type": "NONE",
     "document": "srd-2024",
-    "hit_dice": "",
+    "hit_dice": null,
     "name": "Hunter",
     "primary_abilities": [],
     "saving_throws": [],
@@ -286,7 +286,7 @@
   "fields": {
     "caster_type": "NONE",
     "document": "srd-2024",
-    "hit_dice": "",
+    "hit_dice": null,
     "name": "Thief",
     "primary_abilities": [],
     "saving_throws": [],
@@ -299,7 +299,7 @@
   "fields": {
     "caster_type": "NONE",
     "document": "srd-2024",
-    "hit_dice": "",
+    "hit_dice": null,
     "name": "Draconic Sorcery",
     "primary_abilities": [],
     "saving_throws": [],
@@ -312,7 +312,7 @@
   "fields": {
     "caster_type": "NONE",
     "document": "srd-2024",
-    "hit_dice": "",
+    "hit_dice": null,
     "name": "Fiend Patron",
     "primary_abilities": [],
     "saving_throws": [],
@@ -325,7 +325,7 @@
   "fields": {
     "caster_type": "NONE",
     "document": "srd-2024",
-    "hit_dice": "",
+    "hit_dice": null,
     "name": "Evoker",
     "primary_abilities": [],
     "saving_throws": [],