Fix “allow(s) to”

Doc/whatsnew/3.6.rst

@@ -113,7 +113,7 @@ See :pep:`498` and the main documentation at :ref:`f-strings`.
 PYTHONMALLOC environment variable
 ---------------------------------
 
-The new :envvar:`PYTHONMALLOC` environment variable allows to set the Python
+The new :envvar:`PYTHONMALLOC` environment variable allows setting the Python
 memory allocators and/or install debug hooks.
 
 It is now possible to install debug hooks on Python memory allocators on Python

Misc/NEWS

@@ -11,7 +11,7 @@ Library
 -------
 
 - Issue #27319: Methods selection_set(), selection_add(), selection_remove()
-  and selection_toggle() of ttk.TreeView now allow to pass multiple items as
+  and selection_toggle() of ttk.TreeView now allow passing multiple items as
   multiple arguments instead of passing them as a tuple.  Deprecated
   undocumented ability of calling the selection() method with arguments.