Remove 'unstable' warning for Windows Store package in docs (GH-15334)

Doc/using/windows.rst

@@ -293,12 +293,6 @@ The Microsoft Store package
 
 .. versionadded:: 3.7.2
 
-.. note::
-   The Microsoft Store package is currently considered unstable while its
-   interactions with other tools and other copies of Python are evaluated.
-   While Python itself is stable, this installation method may change its
-   behavior and capabilities during Python 3.7 releases.
-
 The Microsoft Store package is an easily installable Python interpreter that
 is intended mainly for interactive use, for example, by students.
 
@@ -318,7 +312,10 @@ session by typing ``python``. Further, pip and IDLE may be used by typing
 All three commands are also available with version number suffixes, for
 example, as ``python3.exe`` and ``python3.x.exe`` as well as
 ``python.exe`` (where ``3.x`` is the specific version you want to launch,
-such as |version|).
+such as |version|). Open "Manage App Execution Aliases" through Start to
+select which version of Python is associated with each command. It is
+recommended to make sure that ``pip`` and ``idle`` are consistent with
+whichever version of ``python`` is selected.
 
 Virtual environments can be created with ``python -m venv`` and activated
 and used as normal.