feat: Update catalog.community.json for preset-fiction-book-writing (#2199)

* feat: Update catalog.community.json for preset-fiction-book-writing

* Add fiction-book-writing preset to community catalog

- Preset ID: fiction-book-writing
- Version: 1.3.0
- Author: Andreas Daumann
- Description: Spec-Driven Development for novel and long-form fiction. Replaces software engineering terminology with storytelling craft: specs become story briefs, plans become story structures, and tasks become scene-by-scene writing tasks. Supports 8 POV modes, all major plot structure frameworks, 5 humanized-AI prose profiles, and exports to DOCX/EPUB/LaTeX via pandoc.

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* doc: added fiction-book-writing preset link in README.md

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

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Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Manfred Riem <15701806+mnriem@users.noreply.github.com>