Docs/Normalize framework capitalization in docs and add Binary Quantization plot

[Goodnight77]

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description

• normalize framework capitalization across some md files
• add the Accuracy_vs_SamplingRate.png plot to Binary Quantization from Scratch.ipynb.

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Pull request overview

This PR standardizes the capitalization of framework and service names across documentation files and fixes minor grammar/formatting issues.

Key changes:

• Normalized framework names to their official capitalization (GitHub, FastEmbed, LangChain, LlamaIndex, Hugging Face)
• Fixed grammar in RELEASE.md ("guide how to" → "guide on how to")
• Added missing space in CONTRIBUTING.md between backtick and word

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

File	Description
docs/index.md	Updated capitalization of GitHub, FastEmbed, LangChain, and LlamaIndex in documentation and code examples
RELEASE.md	Fixed grammar from "guide how to" to "guide on how to"
README.md	Standardized FastEmbed, LangChain, and LlamaIndex capitalization throughout examples and documentation
CONTRIBUTING.md	Corrected capitalization of LangChain, LlamaIndex, and Hugging Face; fixed spacing after backtick in markdown

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📝 Walkthrough

Walkthrough

This pull request contains documentation updates standardizing capitalization and formatting conventions across multiple files. Changes include correcting product name capitalization (FastEmbed, LangChain, LlamaIndex, GitHub), minor grammar improvements ("guide how to release" → "guide on how to release"), and reformatting notebook cell outputs from scalar to array representations with a new markdown section. No functional code, logic, or API changes are present.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

• Most changes are homogeneous, repetitive capitalization corrections across documentation files (low cognitive load per instance)
• Grammar and formatting updates are straightforward
• Special attention required for the Jupyter notebook file to verify output format conversions and new markdown cell placement are correctly rendered

Suggested reviewers

• joein

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description check	✅ Passed	Description clearly outlines the two main changes: normalizing framework capitalization across markdown files and adding a plot to a notebook.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Title check	✅ Passed	The title accurately reflects the two main changes: normalizing framework capitalization (LangChain, LlamaIndex, FastEmbed, GitHub) and adding a Binary Quantization plot.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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