cp: Improve math tutorial README documentation (1766) into r1.2.0

[svcnvidia-nemo-ci]

beep boop [🤖]: Hi @lbliii 👋,

we've cherry picked #1766 into  for you! 🚀

Please review and approve this cherry pick by your convenience!

[svcnvidia-nemo-ci]

/ok to test 2889617

[copy-pr-bot]

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[greptile-apps]

Greptile Summary

This is a documentation-only cherry-pick from #1766 into r1.2.0 that substantially improves the math tutorial README. It adds an AWS credentials setup section, a quick-overview ASCII pipeline diagram, a collapsible wrapper for the detailed Mermaid flowchart, expanded HuggingFace auth guidance, score interpretation tables, LSH parameter reference, and a new Troubleshooting section.

Confidence Score: 5/5

Documentation-only change; safe to merge.

No code is modified — all changes are README documentation additions and clarifications. The technical content (LSH threshold formula, score tables, CLI flag descriptions) is accurate. No P0/P1 findings.

No files require special attention.

Important Files Changed

Filename	Overview
tutorials/math/README.md	Documentation improvements: AWS credentials section, pipeline overview diagram, collapsible Mermaid chart, expanded auth/score/LSH guidance, and a Troubleshooting section — all accurate and well-structured.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart LR
    HF["HuggingFace Hub"] -->|"0_download.py"| RAW["Raw Data"]
    RAW -->|"1_cc_index_lookup.py\n(if no WARC metadata)"| CC_IDX["CC Index (S3)"]
    CC_IDX --> PRE["2_text_preprocess.py"]
    RAW -->|"skip step 1\n(if WARC present)"| PRE
    PRE -->|"fetches WARC via S3/HTTPS"| LLM["3_llm_cleanup.py"]
    LLM --> QC["4_quality_classifier.py"]
    QC --> DEDUP["5_deduplication.py"]
    DEDUP --> FINAL["Final Data"]

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