rx_pin and tx_pin erroneously named in the Embassy example

[mschnell1]

A small glitch but it took me a while to detect my own problems duue to this:

my current code is:

    let uart_result = BufferedUart::new(
        uart_device,
        IrqsLpuart1,
        rx_pin,
        tx_pin,
       ....

in the original Embassy example the namkes of rx_pin and tx_pin are swapped that created a major confusion on my site.

in fact the ultimate origin of the confusion is with Embassy . here they go:

impl<'d> BufferedUart<'d> {
    /// Create a new bidirectional buffered UART driver
    pub fn new<T: Instance>(
        peri: impl Peripheral<P = T> + 'd,
        _irq: impl interrupt::typelevel::Binding<T::Interrupt, InterruptHandler<T>> + 'd,
        rx: impl Peripheral<P = impl RxPin<T>> + 'd,
        tx: impl Peripheral<P = impl TxPin<T>> + 'd,
        tx_buffer: &'d mut [u8],
        rx_buffer: &'d mut [u8],
        config: Config,
    ) -> Result<Self, ConfigError> {

having the sequence of the pins reverse regarding the sequence of the buffers. :( :( :(