Pro | Updating Bootloader tutorial mentions file that doesn't exist

[bashynx]

The tutorial for updating bootloader for Portenta board has wrong file mentioned https://docs.arduino.cc/tutorials/portenta-h7/updating-the-bootloader

It seems that in newest Core version, the updatingBootloader file got renamed, at least I presume it's the same file.

[per1234]

It was renamed here:

• arduino/ArduinoCore-mbed@7fee0c1
  • library name changed from "Portenta_System" to "STM32H747_System"
  • Example sketch name changed from "PortentaH7_updateBootloader" to "H747_updateBootloader"
• arduino/ArduinoCore-mbed@8ab4ec4
  • Example sketch name changed from "H747_updateBootloader" to "STM32H747_updateBootloader"

There are additional occurrences of the outdated library and example name, so a comprehensive review should be done of the documentation content rather than patching only this specific tutorial.

[marqdevx]

Noted and we will update all the content related to that change

Thanks @bashynx @per1234 😄

[marqdevx]

Fix merged, thanks for the reporting it! :D
#176