gh-146440: Add an example for the json array_hook decoder parameter

Author: fedonman

Doc/library/json.rst

@@ -99,6 +99,12 @@ Customizing JSON object decoding::
     >>> import decimal
     >>> json.loads('1.1', parse_float=decimal.Decimal)
     Decimal('1.1')
+    >>> json.loads('{"name": "point", "coords": [[1, 2], [3, 4]]}',
+    ...     array_hook=tuple)  # doctest: +SKIP
+    {'name': 'point', 'coords': ((1, 2), (3, 4))}
+    >>> json.loads('{"name": "point", "coords": [1, 2]}',
+    ...     object_pairs_hook=frozendict, array_hook=tuple)  # doctest: +SKIP
+    frozendict({'name': 'point', 'coords': (1, 2)})
 
 Extending :class:`JSONEncoder`::
 
@@ -303,7 +309,7 @@ Basic Usage
 
    :param array_hook:
       If set, a function that is called with the result of
-      any JSON array literal decoded with as a Python list.
+      any JSON array literal decoded as a Python list.
       The return value of this function will be used
       instead of the :class:`list`.
       This feature can be used to implement custom decoders.

Lib/json/decoder.py

@@ -314,7 +314,7 @@ def __init__(self, *, object_hook=None, parse_float=None,
         be used along ``object_pairs_hook`` to customize the resulting data
         structure - for example, by setting that to ``frozendict`` and
         ``array_hook`` to ``tuple``, one can get a deep immutable data
-        structute from any JSON data.
+        structure from any JSON data.
 
         ``parse_float``, if specified, will be called with the string
         of every JSON float to be decoded. By default this is equivalent to