-fixed a doc test error in the interface file even though it's unknown why that was even recognized as a doc test

- fixed a few documentation links and warnings

src/epd4in2/command.rs

@@ -97,7 +97,7 @@ pub enum Command {
 	LOW_POWER_DETECTION = 0x51,
 	/// This command defines non-overlap period of Gate and Source.
 	TCON_SETTING = 0x60,
-	/// This command defines alternative resolution and this setting is of higher priority than the RES[1:0] in R00H (PSR).
+	/// This command defines alternative resolution and this setting is of higher priority than the RES\[1:0\] in R00H (PSR).
 	RESOLUTION_SETTING = 0x61,
 	/// This command defines the Fist Active Gate and First Active Source of active channels.
 	GSST_SETTING = 0x65,

src/epd4in2/mod.rs

@@ -105,7 +105,7 @@ where
 
     /// Creates a new driver from a SPI peripheral, CS Pin, Busy InputPin, DC
     ///
-    /// This already initialises the device. That means [EPD4in2::init()](EPD4in2::init()) isn't needed directly afterwards
+    /// This already initialises the device. That means [init()](init()) isn't needed directly afterwards
     ///
     /// # Example
     ///
@@ -136,6 +136,7 @@ where
         Ok(epd)
     }
 
+    /// blablabla
     fn init(&mut self) -> Result<(), E> {
         // reset the device
         self.reset();

src/interface/connection_interface.rs

@@ -128,9 +128,10 @@ where
     /// if the device is still busy
     /// 
     /// is_busy_low
-    ///     - TRUE for epd4in2, epd1in54, epd2in13, epd2in7, epd5in83, epd7in5
     /// 
+    ///  - TRUE for epd4in2, epd1in54, epd2in13, epd2in7, epd5in83, epd7in5
     ///  - FALSE for epd2in9
+    /// 
     /// Most likely there was a mistake with the 2in9 busy connection
     pub(crate) fn wait_until_idle(&mut self, is_busy_low: bool) {
         self.delay_ms(1);