heartbeat: Fix wrong error codes in documentation
diff --git a/src/heartbeat.c b/src/heartbeat.c
index b33f236..e03b44e 100644
--- a/src/heartbeat.c
+++ b/src/heartbeat.c
@@ -143,8 +143,8 @@
* @param client The heartbeat client
* @param plist The plist to send
*
- * @return DIAGNOSTICS_RELAY_E_SUCCESS on success,
- * DIAGNOSTICS_RELAY_E_INVALID_ARG when client or plist is NULL
+ * @return HEARTBEAT_E_SUCCESS on success,
+ * HEARTBEAT_E_INVALID_ARG when client or plist is NULL
*/
heartbeat_error_t heartbeat_send(heartbeat_client_t client, plist_t plist)
{
@@ -167,8 +167,8 @@
* @param client The heartbeat client
* @param plist The plist to store the received data
*
- * @return DIAGNOSTICS_RELAY_E_SUCCESS on success,
- * DIAGNOSTICS_RELAY_E_INVALID_ARG when client or plist is NULL
+ * @return HEARTBEAT_E_SUCCESS on success,
+ * HEARTBEAT_E_INVALID_ARG when client or plist is NULL
*/
heartbeat_error_t heartbeat_receive(heartbeat_client_t client, plist_t * plist)
{
