Fix typo: Change "per-query" to "pre-query" in documentation

[Copilot]

Fixed a documentation typo where "per-query" was incorrectly used instead of "pre-query" in the Query Planner section of the roadmap documentation.

The text "Building tools to enable per-query and post-query transforms" has been corrected to "Building tools to enable pre-query and post-query transforms" across all documentation files.

This change makes logical sense as pre-query transforms would occur before query execution as part of query planning, whereas "per-query" would imply transforms that happen during each query execution.

Files updated:

• docs/docs.trychroma.com/markdoc/content/docs/overview/roadmap.md
• docs/docs.trychroma.com/public/llms-docs-overview-roadmap.txt
• docs/docs.trychroma.com/public/llms-full.text
• sample_apps/generative_benchmarking/data/chroma_docs.json

Fixes #5364.

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[Copilot]

@HammadB 👋 This repository doesn't have Copilot instructions. With Copilot instructions, I can understand the repository better, work faster and produce higher quality PRs.

I can generate a .github/copilot-instructions.md file for you automatically. Click here to open a pre-filled issue and assign it to me. I'll write the instructions, and then tag you for review.