Itertools docs edits

docs/language/core.rst

@@ -26,8 +26,7 @@ Returns an iterator of all but the last item in *coll*.
    => (list (butlast []))
    []
 
-   => (import itertools)
-   => (list (take 5 (butlast (itertools.count 10))))
+   => (list (take 5 (butlast (count 10))))
    [10, 11, 12, 13, 14]
 
 
@@ -994,8 +993,7 @@ Returns an iterator of all but the last *n* items in *coll*. Raises
    => (list (drop-last 100 (range 100)))
    []
 
-   => (import itertools)
-   => (list (take 5 (drop-last 100 (itertools.count 10))))
+   => (list (take 5 (drop-last 100 (count 10))))
    [10, 11, 12, 13, 14]
 
 
@@ -1288,20 +1286,17 @@ Included itertools
 count cycle repeat accumulate chain compress drop-while remove group-by islice *map take-while tee zip-longest product permutations combinations multicombinations
 ---------
 
-All of Python's itertools are available, however some of the names have been
-changed:
+All of Python's `itertools <https://docs.python.org/3/library/itertools.html>`_
+are available. Some of their names have been changed:
 
-  - `starmap` has been changed to `*map`
+  - ``starmap`` has been changed to ``*map``
 
-  - `combinations_with_replacement` has been changed to `multicombinations`
+  - ``combinations_with_replacement`` has been changed to ``multicombinations``
 
-  - `groupby` has been changed to`group-by`
+  - ``groupby`` has been changed to ``group-by``
 
-  - `takewhile` has been changed to `take-while`
+  - ``takewhile`` has been changed to ``take-while``
   
-  - `dropwhile` has been changed to `drop-while`
+  - ``dropwhile`` has been changed to ``drop-while``
   
-  - `filterfalse` has been changed to `remove`
-
-  Please refer to the `Python documentation
-  <https://docs.python.org/3/library/itertools.html>`_ for more information.
+  - ``filterfalse`` has been changed to ``remove``