Clarify instructions for STM32 boards. Remove GIGA

Author: aliphys

README.md

@@ -16,8 +16,8 @@ The Arduino_UnifiedStorage library provides a unified interface to access differ
 2. Check compatibility with your platform
 3. To use internal storage, you need to make sure it is partitioned and formatted correctly:
 
-### Formatting the Portenta H7 Internal Storage
-* Flash the `QSPIFormat` example that can be found in the `STM32H747_System` folder (For Portenta H7/Opta/Giga)
+### Formatting the Portenta H7 / Portenta Machine Control / Opta Internal Storage
+* Flash the `QSPIFormat` example that can be found in the `STM32H747_System` folder
 * Open the serial monitor and select answer with "n" when this appears "Do you want to use partition scheme 1? Y/[n]"
 * The sketch will warn you that the content of the QSPI flash will be erased. Answer with "Y".
 * When asked if you'd like to use LittleFS on the data partition, select "n". Most of the examples assume that the drive is formatted as FAT. You can use the library to format to LittleFS later.