Fix typo found by Min ho Kim (GH-14879)

miss-islington · terryjreedy · web-flow · commit 7649f8c7f891 · 2019-07-21T12:54:34.000-07:00
(cherry picked from commit 8e3a738) Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
diff --git a/Lib/idlelib/help.py b/Lib/idlelib/help.py
@@ -257,7 +257,7 @@ def copy_strip():
     same, help.html can be backported.  The internal Python version
     number is not displayed.  If maintenance idle.rst diverges from
     the master version, then instead of backporting help.html from
-    master, repeat the proceedure above to generate a maintenance
+    master, repeat the procedure above to generate a maintenance
     version.
     """
     src = join(abspath(dirname(dirname(dirname(__file__)))),
