docs : update speculative decoding parameters after refactor (#22397) (#22539)

* docs : update speculative decoding parameters after refactor (#22397)

Update docs/speculative.md to reflect the new parameter naming scheme
introduced in PR #22397:

- Replace --draft-max/--draft-min with --spec-draft-n-max/--spec-draft-n-min
- Replace --spec-ngram-size-n/m with per-implementation variants
- Add documentation for all new --spec-ngram-*- parameters
- Update all example commands

Assisted-by: llama.cpp:local pi

* pi : add rule to use gh CLI for GitHub resources

Assisted-by: llama.cpp:local pi

* docs : run llama-gen-docs

* arg : fix typo

.pi/gg/SYSTEM.md

@@ -4,6 +4,7 @@ General:
 - By very precise and concise when writing code, comments, explanations, etc.
 - PR and commit titles format: `<module> : <title>`. Lookup recents for examples
 - Don't try to build or run the code unless you are explicitly asked to do so
+- Use the `gh` CLI tool when querying PRs, issues, or other GitHub resources
 
 Coding:
 - When in doubt, always refer to the CONTRIBUTING.md file of the project