Update app.py

app.py

@@ -71,7 +71,7 @@ def store_document_data(PDF_FILE):
            
             doc_index = index.ntotal - 1
             
-           with open(index_file, "rb") as f:
+            with open(index_file, "rb") as f:
                 response = requests.post(API_URL_EMBEDDINGS, 
                              files={"file": ("index.bin", f, "application/octet-stream")})