od: add missing backticks

src/uu/od/src/inputdecoder.rs

@@ -56,7 +56,7 @@ where
     I: PeekRead,
 {
     /// calls `peek_read` on the internal stream to (re)fill the buffer. Returns a
-    /// MemoryDecoder providing access to the result or returns an i/o error.
+    /// `MemoryDecoder` providing access to the result or returns an i/o error.
     pub fn peek_read(&mut self) -> io::Result<MemoryDecoder> {
         match self
             .input
@@ -81,7 +81,7 @@ impl<'a, I> HasError for InputDecoder<'a, I>
 where
     I: HasError,
 {
-    /// calls has_error on the internal stream.
+    /// calls `has_error` on the internal stream.
     fn has_error(&self) -> bool {
         self.input.has_error()
     }

src/uu/od/src/od.rs

@@ -459,7 +459,7 @@ pub fn uu_app() -> Command {
         )
 }
 
-/// Loops through the input line by line, calling print_bytes to take care of the output.
+/// Loops through the input line by line, calling `print_bytes` to take care of the output.
 fn odfunc<I>(
     input_offset: &mut InputOffset,
     input_decoder: &mut InputDecoder<I>,

src/uu/od/src/output_info.rs

@@ -139,7 +139,7 @@ impl OutputInfo {
     /// ```
     ///
     /// This algorithm assumes the size of all types is a power of 2 (1, 2, 4, 8, 16, ...)
-    /// Increase MAX_BYTES_PER_UNIT to allow larger types.
+    /// Increase `MAX_BYTES_PER_UNIT` to allow larger types.
     fn calculate_alignment(
         sf: &dyn TypeSizeInfo,
         byte_size_block: usize,

src/uu/od/src/parse_inputs.rs

@@ -90,8 +90,8 @@ pub fn parse_inputs(matches: &dyn CommandLineOpts) -> Result<CommandLineInputs,
 
 /// interprets inputs when --traditional is on the command line
 ///
-/// normally returns CommandLineInputs::FileAndOffset, but if no offset is found,
-/// it returns CommandLineInputs::FileNames (also to differentiate from the offset == 0)
+/// normally returns `CommandLineInputs::FileAndOffset`, but if no offset is found,
+/// it returns `CommandLineInputs::FileNames` (also to differentiate from the offset == 0)
 pub fn parse_inputs_traditional(input_strings: &[&str]) -> Result<CommandLineInputs, String> {
     match input_strings.len() {
         0 => Ok(CommandLineInputs::FileNames(vec!["-".to_string()])),