use ContractId for more consistency with the rest of the SDK

Author: ElliotFriend

src/stellartoml/index.ts

@@ -103,7 +103,7 @@ export namespace Api {
   }
   export type Url = string;
   export type PublicKey = string;
-  export type ContractAddress = string;
+  export type ContractId = string;
   export type ISODateTime = string;
   export interface Documentation {
     ORG_NAME?: string;
@@ -193,7 +193,7 @@ export namespace Api {
     KYC_SERVER?: Url;
     WEB_AUTH_ENDPOINT?: Url;
     WEB_AUTH_FOR_CONTRACTS_ENDPOINT?: Url;
-    WEB_AUTH_CONTRACT_ID?: ContractAddress;
+    WEB_AUTH_CONTRACT_ID?: ContractId;
     FEDERATION_SERVER?: Url;
     SIGNING_KEY?: PublicKey;
     HORIZON_URL?: Url;