Addressed @BurntSuchi's remarks regarding Entry::replace

Author: Binero

src/libstd/collections/hash/map.rs

@@ -2167,21 +2167,20 @@ impl<'a, K, V> OccupiedEntry<'a, K, V> {
     /// # Examples
     ///
     /// ```
-    /// # #![feature(map_entry_replace)]
+    /// #![feature(map_entry_replace)]
     /// use std::collections::HashMap;
     /// use std::collections::hash_map::Entry;
     ///
     /// let mut map: HashMap<String, u32> = HashMap::new();
-    /// map.insert(String::from("poneyland"), 15);
+    /// map.insert("poneyland".to_string(), 15);
     ///
-    /// if let Entry::Occupied(entry) = map.entry(String::from("poneyland")) {
+    /// if let Entry::Occupied(entry) = map.entry("poneyland".to_string()) {
     ///     let (old_key, old_value): (String, u32) = entry.replace(16);
     ///     assert_eq!(old_key, "poneyland");
     ///     assert_eq!(old_value, 15);
     /// }
     ///
     /// assert_eq!(map.get("poneyland"), Some(&16));
-    ///
     /// ```
     #[unstable(feature = "map_entry_replace", issue = "44286")]
     pub fn replace(mut self, value: V) -> (K, V) {