Documentation content minor update post checklist review

Author: TaddyHC

content/hardware/04.pro/boards/portenta-x8/tutorials/09.image-flashing/content.md

@@ -1,7 +1,7 @@
 ---
 beta: true
 title: '09. How To Flash Your Portenta X8'
-description: 'This tutorial teaches you how to flash your Portenta X8 through USB.'
+description: 'This tutorial teaches you different methods to flash your Portenta X8.'
 difficulty: intermediate
 tags:
   - Embedded Linux