Docs: Fix examples, grammar, add links (#22406)
Docs: Fix examples, grammar, add links (#22406)

- Fix examples: syntax errors, formatting
- Add links to referenced Emotion documentation
- Fix grammar, punctuation
- Update headings: Remove top-level "Emotion", adjust others
grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana