added LACE/NoLACE checkpoint URL

dnn/torch/osce/README.md

@@ -32,6 +32,8 @@ Generating inference data is analogous to generating training data. Given an ite
 
 The folder item1.se then serves as input for the test_model.py script or for the --testdata argument of train_model.py resp. adv_train_model.py
 
+Checkpoints of pre-trained models are located here https://media.xiph.org/lpcnet/models/lace-20231019.tar.gz.
+
 ## Regression loss based training
 Create a default setup for LACE or NoLACE via