Update content/hardware/04.pro/carriers/portenta-hat-carrier/tutorials/user-manual/content.md

Co-authored-by: Julián Caro Linares <j.carolinares@arduino.cc>

Author: mcmchris

content/hardware/04.pro/carriers/portenta-hat-carrier/tutorials/user-manual/content.md

@@ -519,7 +519,7 @@ This abstraction makes it easier to manipulate the GPIO without having to rewrit
 
 The decision to containerize the Python® script using Docker ensures that it runs in a consistent environment and is isolated from other processes. Docker provides a mechanism to create containerized applications that can be executed reliably across various platforms.
 
-```python
+```bash
 # dockerfile
 
 # Use an official Python runtime as the base image