Issue #25533: Merge frozen module docs from 3.5

Doc/library/ctypes.rst

@@ -1100,14 +1100,15 @@ access violation or whatever, so it's better to break out of the loop when we
 hit the NULL entry::
 
    >>> for item in table:
-   ...     print(item.name, item.size)
    ...     if item.name is None:
    ...         break
+   ...     print(item.name.decode("ascii"), item.size)
    ...
-   __hello__ 104
-   __phello__ -104
-   __phello__.spam 104
-   None 0
+   _frozen_importlib 31764
+   _frozen_importlib_external 41499
+   __hello__ 161
+   __phello__ -161
+   __phello__.spam 161
    >>>
 
 The fact that standard Python has a frozen module and a frozen package

Doc/library/pkgutil.rst

@@ -140,7 +140,7 @@ support.
 .. function:: iter_modules(path=None, prefix='')
 
    Yields ``(module_finder, name, ispkg)`` for all submodules on *path*, or, if
-   path is ``None``, all top-level modules on ``sys.path``.
+   *path* is ``None``, all top-level modules on ``sys.path``.
 
    *path* should be either ``None`` or a list of paths to look for modules in.
 
@@ -161,7 +161,7 @@ support.
 .. function:: walk_packages(path=None, prefix='', onerror=None)
 
    Yields ``(module_finder, name, ispkg)`` for all modules recursively on
-   *path*, or, if path is ``None``, all accessible modules.
+   *path*, or, if *path* is ``None``, all accessible modules.
 
    *path* should be either ``None`` or a list of paths to look for modules in.