Update library.properties

Author: fpistm

library.properties

@@ -2,7 +2,7 @@ name=STM32duino STM32SD
 version=1.2.2
 author=Several
 maintainer=stm32duino
-sentence=Enables reading and writing on SD card using SD card slot of the STM32 Board.
+sentence=Enables reading and writing on SD card using SD card slot connected to the SDIO/SDMMC-hardware of the STM32 MCU. For slots connected to SPI-hardware use the standard Arduino SD library.
 paragraph=Once an SD memory card is connected to SD card slot you are able to create files and read/write on them. You can also move through directories on the SD card.
 category=Data Storage
 url=https://github.com/stm32duino/STM32SD