Update app.py

app.py

@@ -53,7 +53,7 @@ retriever = vectorstore.as_retriever(search_type="similarity_score_threshold", s
 prompt = hub.pull("rlm/rag-prompt")
 llm = HuggingFaceEndpoint(repo_id="mistralai/Mistral-7B-Instruct-v0.3")
 rag_chain = (
-    {"context": retriever† | format_docs, "question": RunnablePassthrough()}
+    {"context": retriever | format_docs, "question": RunnablePassthrough()}
     | prompt
     | llm
     | StrOutputParser()