Update bpi_leaf_s3 for v1.1

_board/bpi_leaf_s3.md

@@ -33,7 +33,7 @@ up to 240 MHz; 2.4G Wi-Fi + Bluetooth LE; RISC-V Ultra Low Power Co-processor; *
 - **Battery voltage detection**: On GPIO14, detection half value of battery voltage.
 - **STEMMA QT / Qwiic connectors**: JST SH 1mm 4-Pin Socket, SDA&GPIO15, SCL&GPIO16.
 - **Boot Button**: Download button. Holding down **Boot** and then pressing **Reset** initiates Firmware Download mode for downloading firmware through the serial port or USB port.
-- **Reset Button**
+- **Reset Button** New v1.1 version support double-clicking the reset button to enter the UF2 bootloader.
 - **RGB LED**: Addressable RGB LED, driven by GPIO48.
 - **Power LED**: Steady on when power is supplied.
 - **Charging LED**: Always off when only the battery is powered, slightly on when only the USB 5V is powered, and always on when the battery is charging.