docs: update llm and ecs

[cristipufu]

No description provided.

[Copilot]

Pull Request Overview

This PR streamlines the LLMs and Embeddings documentation by simplifying the introduction, adding usage notes, and standardizing warning/hint formatting.

• Simplified the overview section and removed redundant references to the UiPath LlamaIndex SDK.
• Added a note about Agent Units consumption and a warning on data residency.
• Updated context grounding hint to use a tip directive.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
docs/llms_and_embeddings.md	Simplified introduction, added Agent Units note, and inserted a warning block
docs/context_grounding.md	Replaced the HINT callout with a tip directive block

Comments suppressed due to low confidence (2)

docs/llms_and_embeddings.md:154

• [nitpick] Wrap this warning block in proper Markdown code fences or use a standard admonition syntax (e.g., > Warning:) to ensure it renders correctly.

/// warning

docs/context_grounding.md:72

• [nitpick] Consider wrapping this tip in code fences or using a conventional Markdown callout (e.g., > Tip:) for consistent rendering with other docs.

/// tip