Docstring typo fix.
diff --git a/Lib/email/MIMEAudio.py b/Lib/email/MIMEAudio.py
index 0ca73e4..57b7b6d 100644
--- a/Lib/email/MIMEAudio.py
+++ b/Lib/email/MIMEAudio.py
@@ -46,7 +46,7 @@
_audiodata is a string containing the raw audio data. If this data
can be decoded by the standard Python `sndhdr' module, then the
- subtype will be automatically included in the Content-TYpe: header.
+ subtype will be automatically included in the Content-Type: header.
Otherwise, you can specify the specific audio subtype via the
_subtype parameter. If _subtype is not given, and no subtype can be
guessed, a TypeError is raised.