encode documentation fix
diff --git a/inc/qcbor/qcbor_encode.h b/inc/qcbor/qcbor_encode.h
index 2460897..d3db1c2 100644
--- a/inc/qcbor/qcbor_encode.h
+++ b/inc/qcbor/qcbor_encode.h
@@ -1722,6 +1722,8 @@
  @param[out] pEncodedCBOR  Structure in which the pointer and length of the encoded
                            CBOR is returned.
 
+ @retval QCBOR_SUCCESS                     Encoded CBOR is returned.
+
  @retval QCBOR_ERR_TOO_MANY_CLOSES         Nesting error
 
  @retval QCBOR_ERR_CLOSE_MISMATCH          Nesting error