fix: fmt issue

Author: CNLHC

examples/stm32l432/src/bin/qspi_mmap.rs

@@ -2,9 +2,8 @@
 #![no_main]
 #![allow(dead_code)]
 /// This example demonstrates how to use the QSPI peripheral in both indirect-mode and memory-mapped mode.
-/// If you want to test this example, please pay attention to:
-///  1. connect QSPI pins to the flash memory. 
-///  2. check the flash memory datasheet to make sure operations in this example are compatible with your device, especially the registers I/O operations.
+/// If you want to test this example, please pay attention to flash pins and check flash device datasheet
+/// to make sure operations in this example are compatible with your device, especially registers I/O operations.
 use defmt::info;
 use embassy_stm32::mode;
 use embassy_stm32::qspi::enums::{