Change difficulty tag to medium

Author: marqdevx

content/hardware/04.pro/boards/portenta-x8/tutorials/custom-container/content.md

@@ -1,6 +1,6 @@
 ---
 title: Create and Upload a Custom Container to the Portenta X8
-difficulty: easy
+difficulty: medium
 tags: [Linux, Python, Containers, ADB]
 description: This tutorial will show you how to create and upload your custom container to your Portenta X8
 author: Benjamin Dannegård