fix api errors response (#1328)

Author: ryanio

package.json

@@ -1,6 +1,6 @@
 {
   "name": "opensea-js",
-  "version": "7.0.2",
+  "version": "7.0.3",
   "description": "TypeScript SDK for the OpenSea marketplace helps developers build new experiences using NFTs and our marketplace data",
   "license": "MIT",
   "author": "OpenSea Developers",

src/api/api.ts

@@ -620,7 +620,7 @@ export class OpenSeaAPI {
     );
 
     const response = await req.send();
-    if (!response.ok) {
+    if (!response.ok()) {
       // If an errors array is returned, throw with the error messages.
       const errors = response.bodyJson?.errors;
       if (errors?.length > 0) {