Update doctests for renames

Author: passcod

library/std/src/collections/hash/map.rs

@@ -2454,7 +2454,7 @@ impl<'a, K, V> Entry<'a, K, V> {
     /// use std::collections::HashMap;
     ///
     /// let mut map: HashMap<&str, String> = HashMap::new();
-    /// let entry = map.entry("poneyland").insert("hoho".to_string());
+    /// let entry = map.entry("poneyland").insert_entry("hoho".to_string());
     ///
     /// assert_eq!(entry.key(), &"poneyland");
     /// ```
@@ -2800,7 +2800,7 @@ impl<'a, K: 'a, V: 'a> VacantEntry<'a, K, V> {
     /// let mut map: HashMap<&str, u32> = HashMap::new();
     ///
     /// if let Entry::Vacant(o) = map.entry("poneyland") {
-    ///     o.insert(37);
+    ///     o.insert_entry(37);
     /// }
     /// assert_eq!(map["poneyland"], 37);
     /// ```