code review

Author: Clark Gaebel

text/0000-collections-reform-part-2.md

@@ -122,7 +122,7 @@ pub fn resize(&mut self, new_len: uint, value: T) where T: Clone
 This is actually easy to implement out-of-tree on top of the current Vec API, but it has
 been frequently requested.
 
-* For HashMap and HashSet:
+* For Vec, RingBuf, BinaryHeap, HashMap and HashSet:
 ```
 /// Clears the map, returning all key-value pairs as an iterator. Keeps the
 /// allocated memory for reuse.
@@ -132,7 +132,7 @@ pub fn drain(&mut self) -> DrainEntries<K, V>;
 This provides a way to grab elements out of a HashMap by value, without
 deallocating the storage for the map itself.
 
-There is an implementation of this at rust-lang/rust#19946.
+There is a partial implementation of this at rust-lang/rust#19946.
 
 ==============
 ## Deprecate