bpo-33859: Fix spelling mistakes in docs. (GH-7691)

(cherry picked from commit c151f7846d6d900c22edaaa77f5f7771b529099e)

Co-authored-by: Xtreak <tirkarthi@users.noreply.github.com>
diff --git a/Doc/using/cmdline.rst b/Doc/using/cmdline.rst
index c6bb0be..70e8d1a 100644
--- a/Doc/using/cmdline.rst
+++ b/Doc/using/cmdline.rst
@@ -889,7 +889,7 @@
    If this environment variable is not set at all, then the interpreter defaults
    to using the current locale settings, *unless* the current locale is
    identified as a legacy ASCII-based locale
-   (as descibed for :envvar:`PYTHONCOERCECLOCALE`), and locale coercion is
+   (as described for :envvar:`PYTHONCOERCECLOCALE`), and locale coercion is
    either disabled or fails. In such legacy locales, the interpreter will
    default to enabling UTF-8 mode unless explicitly instructed not to do so.