refactor: add express prefix to update wallet route

To differentiate between backend and express route. When used for
lightning the express route will do extra layer of verificaiton to
ensure the request comes from the user with the correct auth key.

Ticket: BTC-0

Author: lcovar

modules/express/src/clientRoutes.ts

@@ -1575,7 +1575,7 @@ export function setupAPIRoutes(app: express.Application, config: Config): void {
   // generate wallet
   app.post('/api/v2/:coin/wallet/generate', parseBody, prepareBitGo(config), promiseWrapper(handleV2GenerateWallet));
 
-  app.put('/api/v2/:coin/wallet/:id', parseBody, prepareBitGo(config), promiseWrapper(handleWalletUpdate));
+  app.put('/express/api/v2/:coin/wallet/:id', parseBody, prepareBitGo(config), promiseWrapper(handleWalletUpdate));
 
   // create address
   app.post('/api/v2/:coin/wallet/:id/address', parseBody, prepareBitGo(config), promiseWrapper(handleV2CreateAddress));