api doc: fix parameter name for mgcp_conn_create()

Change-Id: Ib6ea230c2e1918bd4e431208610b53e468e534c7
diff --git a/src/libosmo-mgcp-client/mgcp_client_fsm.c b/src/libosmo-mgcp-client/mgcp_client_fsm.c
index 3c755be..6e1e7b8 100644
--- a/src/libosmo-mgcp-client/mgcp_client_fsm.c
+++ b/src/libosmo-mgcp-client/mgcp_client_fsm.c
@@ -548,7 +548,7 @@
 
 /*! allocate FSM, and create a new connection on the MGW.
  *  \param[in] mgcp MGCP client descriptor.
- *  \param[in] mgcpparent_fi Parent FSM instance.
+ *  \param[in] parent_fi Parent FSM instance.
  *  \param[in] parent_term_evt Event to be sent to parent when terminating.
  *  \param[in] parent_evt Event to be sent to parent when operation is done.
  *  \param[in] conn_peer Connection parameters (ip, port...).