fix: address stx balance schema bug

Author: zone117x

docs/api/address/get-address-stx-balance.schema.json

@@ -3,6 +3,5 @@
   "description": "GET request that returns address balances",
   "title": "AddressStxBalanceResponse",
   "type": "object",
-  "required": ["stx", "fungible_tokens", "non_fungible_tokens"],
   "$ref": "../../entities/balance/balance.schema.json"
 }

docs/index.d.ts

@@ -58,9 +58,9 @@ export interface AddressBalanceResponse {
  * GET request that returns address balances
  */
 export interface AddressStxBalanceResponse {
-  balance?: string;
-  total_sent?: string;
-  total_received?: string;
+  balance: string;
+  total_sent: string;
+  total_received: string;
 }
 
 /**