Fix serial_driver.md list item numbering (#19819)

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souvlakeeb 2023-02-12 10:05:46 -07:00 committed by GitHub
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@ -105,7 +105,7 @@ For STM32 MCUs several GPIO configuration options can be changed as well. See th
#define SERIAL_USART_TX_PAL_MODE 7 // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 7
```
1. Decide either for `SERIAL`, `SIO` or `PIO` subsystem, see the section ["Choosing a driver subsystem"](#choosing-a-driver-subsystem).
4. Decide either for `SERIAL`, `SIO` or `PIO` subsystem, see the section ["Choosing a driver subsystem"](#choosing-a-driver-subsystem).
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