add German

model.py

@@ -345,12 +345,12 @@ def _get_wenet_model(
     nn_model = _get_nn_model_filename(
         repo_id=repo_id,
         filename="final.zip",
-        subfolder="./",
+        subfolder=".",
     )
     tokens = _get_token_filename(
         repo_id=repo_id,
         filename="units.txt",
-        subfolder="./",
+        subfolder=".",
     )
 
     feat_config = sherpa.FeatureConfig(normalize_samples=False)
@@ -500,13 +500,13 @@ def _get_german_pre_trained_model(
     nn_model = _get_nn_model_filename(
         repo_id=repo_id,
         filename="voxpopuli_asr_base_10k_de.pt",
-        subfolder="./",
+        subfolder=".",
     )
 
     tokens = _get_token_filename(
         repo_id=repo_id,
         filename="tokens-de.txt",
-        subfolder="./",
+        subfolder=".",
     )
 
     config = sherpa.OfflineRecognizerConfig(