Update index.md

Author: okhat

docs/docs/index.md

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 # _Programming_—not prompting—_LMs_
 
-[![PyPI Downloads](https://static.pepy.tech/badge/dspy/month)](https://pepy.tech/projects/dspy)
+![PyPI Downloads](https://img.shields.io/pypi/dm/dspy)
 
 DSPy is a declarative framework for building modular AI software. It allows you to **iterate fast on structured code**, rather than brittle strings, and offers algorithms that **compile AI programs into effective prompts and weights** for your language models, whether you're building simple classifiers, sophisticated RAG pipelines, or Agent loops.