Fix a small typo in API docs of imap4 kio-slave: send -> sent

Cherry-picked from: 62950207dbc59863ddb0cf5ca01271fbac0df4c3

Signed-off-by: Luke Dashjr <luke-jr+git@utopios.org>
(cherry picked from commit c25824ac0f)

tdeioslave/imap4/imap4.h

@@ -65,7 +65,7 @@ public:
     const TQString & _pass);
   /**
    * @brief get a message or part of a message
-   * the data is normally send as we get it from the server
+   * the data is normally sent as we get it from the server
    * if you want the slave to decode the content (e.g. for attachments)
    * then append an additional INFO=DECODE to the URL
    */