- Fix a typo in a timing API call

- Convert the last part of channel.c over to use the timing API.  This would
   not have made a difference when using the dahdi timing module.  I noticed
   it when trying to use another timing source.  Oops.  :)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@122923 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/timing.h

@@ -161,7 +161,7 @@ int ast_timer_enable_continuous(int handle);
  * \retval -1 failure, with errno set
  * \retval 0 success
  */
-int ast_timer_disable_continous(int handle);
+int ast_timer_disable_continuous(int handle);
 
 /*!
  * \brief Determine timing event