revert comment wording (#16714)
diff --git a/Lib/email/header.py b/Lib/email/header.py
index b46d21d..2cf870f 100644
--- a/Lib/email/header.py
+++ b/Lib/email/header.py
@@ -103,7 +103,7 @@
                         dec = email.base64mime.decode(encoded)
                     except binascii.Error:
                         # Turn this into a higher level exception.  BAW: Right
-                        # now we raise the lower level exception away but
+                        # now we throw the lower level exception away but
                         # when/if we get exception chaining, we'll preserve it.
                         raise HeaderParseError
                 if dec is None: