Issue #25523: Backported a-to-an corrections.
diff --git a/Lib/cookielib.py b/Lib/cookielib.py
index f2df467..eb9aec4 100644
--- a/Lib/cookielib.py
+++ b/Lib/cookielib.py
@@ -1434,7 +1434,7 @@
                         break
                     # convert RFC 2965 Max-Age to seconds since epoch
                     # XXX Strictly you're supposed to follow RFC 2616
-                    #   age-calculation rules.  Remember that zero Max-Age is a
+                    #   age-calculation rules.  Remember that zero Max-Age
                     #   is a request to discard (old and new) cookie, though.
                     k = "expires"
                     v = self._now + v