Update vectorstore.py

vectorstore.py

@@ -1,6 +1,6 @@
 from langchain_community.vectorstores import Chroma
 
-def get_chroma_vectorstore(embeddings, persist_directory):
+def get_chroma_vectorstore(embeddings, vectorstore_path):
     vectorstore = Chroma(persist_directory=vectorstore_path, embedding_function=embedding_model)
     
     return vectorstore