Update app.py

app.py

@@ -109,7 +109,7 @@ def main():
     max_retries=3
     )
     
-    retriever = create_retriever_from_chroma(vectorstore_path="docs/chroma/", search_type=search_type, k=k, chunk_size=350, chunk_overlap=30)
+    retriever = create_retriever_from_chroma(vectorstore_path="docs/chroma/", search_type=search_type, k=k, chunk_size=550, chunk_overlap=40)