Add size information to hashmap constructors

Author: rockbmb

Data/HashMap/Array.hs

@@ -388,7 +388,7 @@ updateM ary idx b =
   where !count = length ary
 {-# INLINE updateM #-}
 
--- | /O(n)/ Update the element at the given positio in this array, by
+-- | /O(n)/ Update the element at the given position in this array, by
 -- applying a function to it.  Evaluates the element to WHNF before
 -- inserting it into the array.
 updateWith' :: Array e -> Int -> (e -> e) -> Array e