docs: fix cargo doc warnings

Author: techmccat

src/adc.rs

@@ -1,5 +1,5 @@
 //! Analog to digital converter configuration.
-//! https://github.com/stm32-rs/stm32l4xx-hal/blob/master/src/adc.rs
+//! <https://github.com/stm32-rs/stm32l4xx-hal/blob/master/src/adc.rs>
 
 #![deny(missing_docs)]
 
@@ -314,7 +314,8 @@ pub mod config {
     pub enum ClockMode {
         /// (Asynchronous clock mode), adc_ker_ck. generated at product level (refer to Section 6: Reset and clock control (RCC)
         Asynchronous,
-        /// (Synchronous clock mode). adc_hclk/1 This configuration must be enabled only if the AHB clock prescaler is set to 1 (HPRE[3:0] = 0xxx in RCC_CFGR register) and if the system clock has a 50% duty cycle.
+        /// (Synchronous clock mode). adc_hclk/1
+        /// This configuration must be enabled only if the AHB clock prescaler is set to 1 (HPRE\[3:0\] = 0xxx in RCC_CFGR register) and if the system clock has a 50% duty cycle.
         Synchronous_Div_1,
         /// Synchronous clock mode. adc_hclk/2
         Synchronous_Div_2,
@@ -1170,9 +1171,9 @@ impl<ADC: TriggerType> Conversion<ADC> {
         !self.is_active()
     }
 
-    /// Converts from Conversion<C, E> to Option<C>.
+    /// Converts from `Conversion<C, E>` to `Option<C>`.
     ///
-    /// Converts self into an Option<C>, consuming self, and discarding the adc, if it is stopped.
+    /// Converts self into an `Option<C>`, consuming self, and discarding the adc, if it is stopped.
     #[inline(always)]
     pub fn active(self) -> Option<Adc<ADC, Active>> {
         match self {
@@ -1181,9 +1182,9 @@ impl<ADC: TriggerType> Conversion<ADC> {
         }
     }
 
-    /// Converts from Conversion<C, E> to Option<E>.
+    /// Converts from `Conversion<C, E>` to `Option<E>`.
     ///
-    /// Converts self into an Option<E>, consuming self, and discarding the adc, if it is still active.
+    /// Converts self into an `Option<E>`, consuming self, and discarding the adc, if it is still active.
     #[inline(always)]
     pub fn stopped(self) -> Option<Adc<ADC, Configured>> {
         match self {

src/delay.rs

@@ -1,9 +1,9 @@
 //! Delay providers
 //!
 //! There are currently two delay providers. In general you should prefer to use
-//! [Delay](Delay), however if you do not have access to `SYST` you can use
-//! [DelayFromCountDownTimer](DelayFromCountDownTimer) with any timer that
-//! implements the [CountDown](embedded_hal::timer::CountDown) trait. This can be
+//! [Delay], however if you do not have access to `SYST` you can use
+//! [DelayFromCountDownTimer] with any timer that
+//! implements the [CountDown](embedded_hal_old::timer::CountDown) trait. This can be
 //! useful if you're using [RTIC](https://rtic.rs)'s schedule API, which occupies
 //! the `SYST` peripheral.
 //!

src/dma.rs

@@ -13,7 +13,7 @@
 //! instructions in DMA controller configuration.
 //!
 //! Adapted from
-//! https://github.com/stm32-rs/stm32h7xx-hal/blob/master/src/dma/mod.rs
+//! <https://github.com/stm32-rs/stm32h7xx-hal/blob/master/src/dma/mod.rs>
 
 use core::fmt::Debug;
 

src/dma/traits.rs

@@ -1,7 +1,7 @@
 //! Traits for DMA types
 //!
 //! Adapted from
-//! https://github.com/stm32-rs/stm32f4xx-hal/blob/master/src/dma/traits.rs
+//! <https://github.com/stm32-rs/stm32f4xx-hal/blob/master/src/dma/traits.rs>
 
 use super::*;
 

src/pwm.rs

@@ -1405,7 +1405,7 @@ macro_rules! tim_hal {
             $(
                 impl<PINS, CHANNEL, COMP> PwmBuilder<$TIMX, PINS, CHANNEL, FaultDisabled, COMP, $typ> {
                     /// Configure a break pin that will disable PWM when activated (active level based on polarity argument)
-                    /// Note: not all timers have fault inputs; FaultPins<TIM> is only implemented for valid pins/timers.
+                    /// Note: not all timers have fault inputs; `FaultPins<TIM>` is only implemented for valid pins/timers.
                     pub fn with_break_pin<P: FaultPins<$TIMX>>(self, _pin: P, polarity: Polarity) -> PwmBuilder<$TIMX, PINS, CHANNEL, FaultEnabled, COMP, $typ> {
                         PwmBuilder {
                             _tim: PhantomData,