docs: add Docker-to-host local LLM connection guide

[r266-tech]

Summary

Documents behavior added in #7950 (is_local_endpoint Docker/Podman/Lima DNS support) that was missing from user-facing docs.

docker.md — new section "Connecting to local LLMs on the host":

• Hostname table for Docker Desktop, Podman, Lima/Colima, and --network=host
• Config example (hermes model with host.docker.internal URL)
• Notes that Hermes auto-detects these as local endpoints (relaxed timeouts)

local-llm-on-mac.md — updated Timeouts auto-detection description to mention container-to-host DNS names (host.docker.internal, host.containers.internal, host.lima.internal).

Fixes #7963

Why

Users running Hermes inside Docker with a local LLM on the host (Ollama, llama.cpp, omlx, vLLM) have no docs guidance on which hostname to use or that auto-detection works. localhost from inside Docker points to the container, not the host — this is a common gotcha that the new section addresses directly.

[alt-glitch]

Note: competing PR #12335 addresses the same docs gap (#7963). One should be closed as duplicate.

[benbarclay]

Thanks @r266-tech — closing as redundant. main's docker.md already documents the full Docker-to-host flow (host.docker.internal, --network host, Ollama), and the container-internal hostnames (Podman/Lima) are covered both in docs and in code (_CONTAINER_LOCAL_SUFFIXES). The competing #12335 was closed unmerged, but the content landed on main regardless. Thanks for the docs contribution.