allow "bindings_with_variant_name" lint where necessary

Author: decathorpe

src/ascii_char.rs

@@ -295,6 +295,7 @@ impl AsciiChar {
     ///
     /// # Example
     /// ```
+    /// # #![allow(bindings_with_variant_name)]
     /// # use ascii::AsciiChar;
     /// let a = AsciiChar::from_ascii('g').unwrap();
     /// assert_eq!(a.as_char(), 'g');

src/ascii_string.rs

@@ -308,6 +308,7 @@ impl AsciiString {
     ///
     /// # Examples
     /// ```
+    /// # #![allow(bindings_with_variant_name)]
     /// # use ascii::AsciiString;
     /// let mut s = AsciiString::from_ascii("foo").unwrap();
     /// assert_eq!(s.pop().map(|c| c.as_char()), Some('o'));