docs: Update system dependencies and add tool index URLs in generate_summaries_uv.py

generate_summaries_uv.py

@@ -13,11 +13,12 @@
 #     "setuptools",
 # ]
 # ///
+# [[tool.uv.index]]
+# url = "https://flashinfer.ai/whl/cu126/torch2.6"
 #
-# System dependencies required:
-# - python3-dev (Python.h headers for Triton compilation)
-# - gcc (C compiler for Triton)
-
+# [[tool.uv.index]]
+# url = "https://wheels.vllm.ai/nightly"
+# ///
 import argparse
 import logging
 import os