docs: Give example of a non-generic signature

src/token/mod.rs

@@ -22,6 +22,17 @@ use crate::Parser;
 ///
 /// *Partial version*: Will return `Err(winnow::error::ErrMode::Incomplete(_))` if there's not enough input data.
 ///
+/// # Effective Signature
+///
+/// Assuming you are parsing `&str`:
+/// ```rust
+/// # use winnow::prelude::*;;
+/// pub fn any(input: &mut &str) -> PResult<char>
+/// # {
+/// #     winnow::token::any.parse_next(input)
+/// # }
+/// ```
+///
 /// # Example
 ///
 /// ```rust
@@ -85,11 +96,23 @@ where
 /// **Note:** [`Parser`] is implemented for strings and byte strings as a convenience (complete
 /// only)
 ///
+/// # Effective Signature
+///
+/// Assuming you are parsing `&str`:
+/// ```rust
+/// # use winnow::prelude::*;;
+/// # use winnow::error::ContextError;
+/// pub fn literal(literal: &str) -> impl Parser<&str, &str, ContextError>
+/// # {
+/// #     winnow::token::literal(literal)
+/// # }
+/// ```
+///
 /// # Example
 /// ```rust
 /// # use winnow::prelude::*;
 /// # use winnow::{error::ErrMode, error::{InputError, ErrorKind}, error::Needed};
-///
+/// #
 /// fn parser(s: &str) -> IResult<&str, &str> {
 ///   "Hello".parse_peek(s)
 /// }
@@ -185,6 +208,19 @@ where
 ///
 /// *Partial version*: Will return `Err(winnow::error::ErrMode::Incomplete(_))` if there's not enough input data.
 ///
+/// # Effective Signature
+///
+/// Assuming you are parsing `&str`:
+/// ```rust
+/// # use winnow::prelude::*;;
+/// # use winnow::stream::ContainsToken;
+/// # use winnow::error::ContextError;
+/// pub fn one_of<'i>(set: impl ContainsToken<char>) -> impl Parser<&'i str, char, ContextError>
+/// # {
+/// #     winnow::token::one_of(set)
+/// # }
+/// ```
+///
 /// # Example
 ///
 /// ```rust
@@ -242,6 +278,19 @@ where
 ///
 /// *Partial version*: Will return `Err(winnow::error::ErrMode::Incomplete(_))` if there's not enough input data.
 ///
+/// # Effective Signature
+///
+/// Assuming you are parsing `&str`:
+/// ```rust
+/// # use winnow::prelude::*;;
+/// # use winnow::stream::ContainsToken;
+/// # use winnow::error::ContextError;
+/// pub fn none_of<'i>(set: impl ContainsToken<char>) -> impl Parser<&'i str, char, ContextError>
+/// # {
+/// #     winnow::token::none_of(set)
+/// # }
+/// ```
+///
 /// # Example
 ///
 /// ```rust