Fix a typo in authorized

src/contract_wrappers/proxy_wrapper.ts

@@ -22,7 +22,7 @@ export class ProxyWrapper extends ContractWrapper {
      */
     public async isAuthorizedAsync(exchangeContractAddress: string): Promise<boolean> {
         const proxyContractInstance = await this._getTokenRegistryContractAsync();
-        const isAuthorized = await proxyContractInstance.authrized.call(exchangeContractAddress);
+        const isAuthorized = await proxyContractInstance.authorized.call(exchangeContractAddress);
         return isAuthorized;
     }
     private async _getTokenRegistryContractAsync(): Promise<ProxyContract> {

src/types.ts

@@ -149,7 +149,7 @@ export interface EtherTokenContract extends ContractInstance {
 }
 
 export interface ProxyContract extends ContractInstance {
-    authrized: {
+    authorized: {
         call: (address: string) => Promise<boolean>;
     };
 }