fix windows url bug (#5137)

fix windows url bug

PaddleNLP/paddlenlp/embeddings/constant.py

@@ -16,7 +16,7 @@ from enum import Enum
 import os.path as osp
 
 URL_ROOT = "https://paddlenlp.bj.bcebos.com"
-EMBEDDING_URL_ROOT = osp.join(URL_ROOT, "models/embeddings")
+EMBEDDING_URL_ROOT = URL_ROOT + "/models/embeddings"
 
 PAD_TOKEN = '[PAD]'
 UNK_TOKEN = '[UNK]'

PaddleNLP/paddlenlp/embeddings/token_embedding.py

@@ -69,7 +69,7 @@ class TokenEmbedding(nn.Embedding):
         vector_path = osp.join(EMBEDDING_HOME, embedding_name + ".npz")
         if not osp.exists(vector_path):
             # download
-            url = osp.join(EMBEDDING_URL_ROOT, embedding_name + ".tar.gz")
+            url = EMBEDDING_URL_ROOT + "/" + embedding_name + ".tar.gz"
             get_path_from_url(url, EMBEDDING_HOME)
 
         logger.info("Loading token embedding...")