Fix minor grammatical mistakes in reversed(dict) doc (GH-10997)

diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index d23e7e9..8874978 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -4283,7 +4283,7 @@
 
    .. describe:: reversed(d)
 
-      Return a reversed iterator over the keys of the dictionary. This is a
+      Return a reverse iterator over the keys of the dictionary. This is a
       shortcut for ``reversed(d.keys())``.
 
    .. method:: setdefault(key[, default])
@@ -4394,7 +4394,7 @@
 
 .. describe:: reversed(dictview)
 
-   Return an reversed iterator over the keys, values or items of the dictionnary.
+   Return a reverse iterator over the keys, values or items of the dictionary.
    The view will be iterated in reverse order of the insertion.
 
    .. versionchanged:: 3.8