[calls] call: Fix typos in section docstring

[Evangelos Ribeiro Tzaras <devrtz src gnome org>]

commit 54092e45d42f73b5193402236cdd666a72572609
Author: Evangelos Ribeiro Tzaras <devrtz fortysixandtwo eu>
Date:   Tue Jan 18 04:47:19 2022 +0100

    call: Fix typos in section docstring

 src/calls-call.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/calls-call.c b/src/calls-call.c
index 5338038c..b0865863 100644
--- a/src/calls-call.c
+++ b/src/calls-call.c
@@ -38,10 +38,10 @@
  *
  * This is the interface to a call.  It has a id, name and a
  * state.  Only the state changes after creation.  If the state is
- * #CALL_CALL_STATE_INCOMING, the call can be answered with #answer.
- * The call can also be hung up at any time with #hang_up.
+ * #CALLS_CALL_STATE_INCOMING, the call can be answered with #calls_call_answer.
+ * The call can also be hung up at any time with #calls_call_hang_up.
  *
- * DTMF tones can be played the call using #send_dtmf
+ * DTMF tones can be played to the call using #calls_call_send_dtmf_tone
  * Valid characters for the key are 0-9, '*', '#', 'A',
  * 'B', 'C' and 'D'.
  */