Call: fix incorrect documentation for Ringing()
Call: fix incorrect documentation for Ringing()

Ringing claims that it only makes sense for incoming calls where
CallState == Initiator; however, this makes no sense.  For incoming calls,
the local side is the Receiver; CallState should never be Initiator.

Reciever was meant there.

Signed-off-by: Andres Salomon <3945bcf5fa0c9ecb9066fe0f9d287073618c06cc@collabora.co.uk>
Reviewed-by: Sjoerd Simons <1371fd10dd05a897e5b55dc6ae4fbafa1f84c6ec@collabora.co.uk>

TelepathyIM/telepathy-spec,freedesktop-unofficial-mirror/telepathy__telepathy-spec