Count modular_model_index.json downloads for diffusers repos

[Pierrci]

Mirrors the counting-query change from huggingface-internal/moon-landing#19441 in the docs snippet.

Changes

Adds modular_model_index.json to the should clauses of the diffusers filter snippet in docs/hub/models-download-stats.md, matching the internal codebase. Modular pipelines (e.g. MiniMaxAI/MiniMax-H3, krea/krea-realtime-video, LTX) load modular_model_index.json at the repo root instead of model_index.json; the filter now lists it as a counted file.

Exact term match, root-level only — consistent with the existing model_index.json clause.

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Note

Authored by Claude Code acting for @Pierrci. Linked: huggingface-internal/moon-landing#19438, huggingface-internal/moon-landing#19441.

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Note

Low Risk
Documentation-only change to an example filter snippet; no production code or download logic is modified in this repo.

Overview
Updates the documented diffusers download-counting filter in models-download-stats.md so modular pipeline repos are counted the same way as classic diffusers loads.

Adds a root-level term match for modular_model_index.json alongside model_index.json, with a short comment that modular pipelines use that file instead. This aligns the public docs with the internal counting query (moon-landing#19441).

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[HuggingFaceDocBuilderDev]

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