Update README.md

Author: oliver-zehentleitner

examples/binance_websocket_spot_userdata_async/README.md

@@ -16,7 +16,7 @@ To run modules of the *UNICORN Binance Suite* you need a [valid license](https:/
 ## Usage
 ### Running the Script:
 ```bash
-python binance_websocket_dex.py
+python binance_websocket_spot_userdata_async.py
 ```
 
 ### Graceful Shutdown:
@@ -28,4 +28,4 @@ The script employs logging to provide insights into its operation and to assist
 file named after the script with a .log extension.
 
 For further assistance or to report issues, please [contact our support team](https://www.lucit.tech/get-support.html) 
-or [visit our GitHub repository](https://github.com/LUCIT-Systems-and-Development/unicorn-binance-websocket-api).
+or [visit our GitHub repository](https://github.com/LUCIT-Systems-and-Development/unicorn-binance-websocket-api).