fix: update pretrained url

ppcls/arch/backbone/model_zoo/convnext.py

@@ -21,7 +21,8 @@ from paddle.nn.initializer import TruncatedNormal, Constant
 from ....utils.save_load import load_dygraph_pretrain, load_dygraph_pretrain_from_url
 
 MODEL_URLS = {
-    "ConvNeXt_tiny": "",  # TODO
+    "ConvNeXt_tiny":
+    "https://paddle-imagenet-models-name.bj.bcebos.com/dygraph/ConvNeXt_tiny_pretrained.pdparams",
 }
 
 __all__ = list(MODEL_URLS.keys())

ppcls/arch/backbone/model_zoo/van.py

@@ -24,7 +24,8 @@ from paddle.nn.initializer import TruncatedNormal, Constant
 from ....utils.save_load import load_dygraph_pretrain, load_dygraph_pretrain_from_url
 
 MODEL_URLS = {
-    "VAN_B0": "",  # TODO
+    "VAN_B0":
+    "https://paddle-imagenet-models-name.bj.bcebos.com/dygraph/VAN_B0_pretrained.pdparams",
 }
 
 __all__ = list(MODEL_URLS.keys())