* @see_also: rtpdtmfsrc, dtmfsrc, rtpmux
*
* The RTP "DTMF" Muxer muxes multiple RTP streams into a valid RTP
- * stream. It does exactly what it's parent (#rtpmux) does, except
+ * stream. It does exactly what its parent (#rtpmux) does, except
* that it prevent buffers coming over a regular sink_%%u pad from going through
* for the duration of buffers that came in a priority_sink_%%u pad.
*