doc(readme): Update doc for url
@@ -298,10 +298,10 @@ To set the base service to be used when contacting the service
service.set_service_url('my_new_service_url')
```
-Or can set it in the environment variable
+Or can set it in the environment variable.
```
-export service_service_url="<your apikey>"
+export <service name>_url="<your url>"
```
## Sending request headers
