Update documentation slightly

Author: david-sawatzke

src/hosted.rs

@@ -3,7 +3,7 @@
 //! This dynamically allocates an output buffer and writes out the data in a single call.
 //! Much better suited for linux or similar environments, but may not always work
 //!
-//! Intendded for use with rppal or linux-embedded-hal
+//! Intended for use with rppal or linux-embedded-hal
 
 use embedded_hal as hal;
 

src/prerendered.rs

@@ -49,7 +49,7 @@ where
     ///
     /// You may need to look at the datasheet and your own hal to verify this.
     ///
-    /// You need to provide a buffer `data`, whoose length is at least 12 * the
+    /// You need to provide a buffer `data`, whose length is at least 12 * the
     /// length of the led strip + 20 byes (or 40, if using the `mosi_idle_high` feature)
     ///
     /// Please ensure that the mcu is pretty fast, otherwise weird timing
@@ -74,8 +74,9 @@ where
     ///
     /// You may need to look at the datasheet and your own hal to verify this.
     ///
-    /// You need to provide a buffer `data`, whoose length is at least 12 * the
-    /// length of the led strip
+    /// You need to provide a buffer `data`, whose length is at least 16 * the
+    /// length of the led strip + 20 bytes (or 40, if using the `mosi_idle_high` feature)
+    /// because each SK6812W pixel needs 4 bytes.
     ///
     /// Please ensure that the mcu is pretty fast, otherwise weird timing
     /// issues will occur