bpo-42134: Raise ImportWarning when calling find_module() in the import system (GH-25044)

diff --git a/Doc/reference/import.rst b/Doc/reference/import.rst
index b5ac21d..5d2169b 100644
--- a/Doc/reference/import.rst
+++ b/Doc/reference/import.rst
@@ -329,6 +329,10 @@
    import machinery will try it only if the finder does not implement
    ``find_spec()``.
 
+.. versionchanged:: 3.10
+   Use of :meth:`~importlib.abc.MetaPathFinder.find_module` by the import system
+   now raises :exc:`ImportWarning`.
+
 
 Loading
 =======
@@ -470,6 +474,9 @@
    An :exc:`ImportError` is raised when ``exec_module()`` is defined but
    ``create_module()`` is not.
 
+.. versionchanged:: 3.10
+   Use of ``load_module()`` will raise :exc:`ImportWarning`.
+
 Submodules
 ----------
 
@@ -896,6 +903,10 @@
    exist on a path entry finder, the import system will always call
    ``find_loader()`` in preference to ``find_module()``.
 
+.. versionchanged:: 3.10
+    Calls to :meth:`~importlib.abc.PathEntryFinder.find_module` by the import
+    system will raise :exc:`ImportWarning`.
+
 
 Replacing the standard import system
 ====================================