Enclose some types in backticks in `aws-smithy-json` docs (#1203)

/// JSON token parser as a Rust iterator

///

/// This parser will parse and yield exactly one [Token] per iterator `next()` call.

/// This parser will parse and yield exactly one [`Token`] per iterator `next()` call.

/// Validation is done on the fly, so it is possible for it to parse an invalid JSON document

/// until it gets to the first [Error].

/// until it gets to the first [`Error`].

///

/// JSON string values are left escaped in the [Token::ValueString] as an [EscapedStr],

/// JSON string values are left escaped in the [`Token::ValueString`] as an [`EscapedStr`],

/// which is a new type around a slice of original `input` bytes so that the caller can decide

/// when to unescape and allocate into a [String].

/// when to unescape and allocate into a [`String`].

///

/// The parser *will* accept multiple valid JSON values. For example, `b"null true"` will

/// yield `ValueNull` and `ValueTrue`. It is the responsibility of the caller to handle this for

    }

}

/// Enum representing the different JSON tokens that can be returned by json_token_iter.

/// Enum representing the different JSON tokens that can be returned by

/// [`crate::deserialize::json_token_iter`].

#[derive(Debug, PartialEq)]

pub enum Token<'a> {

    StartArray {