Fix few typos.
diff --git a/Lib/imaplib.py b/Lib/imaplib.py
index 1022e77..1fcba21 100644
--- a/Lib/imaplib.py
+++ b/Lib/imaplib.py
@@ -1385,7 +1385,7 @@
"""Convert date_time to IMAP4 INTERNALDATE representation.
Return string in form: '"DD-Mmm-YYYY HH:MM:SS +HHMM"'. The
- date_time argument can be a number (int or float) represening
+ date_time argument can be a number (int or float) representing
seconds since epoch (as returned by time.time()), a 9-tuple
representing local time (as returned by time.localtime()), or a
double-quoted string. In the last case, it is assumed to already