Update app.py

app.py

@@ -98,7 +98,7 @@ pinecone_index = pc.Index(index_name)
 
 # --- Load PDF documents from folder ---
 documents = SimpleDirectoryReader(
-    input_dir="data",
+    input_dir="Data",
     required_exts=[".pdf"],
     file_extractor={".pdf": PDFReader()}
 ).load_data()