docs: add jonathimer/devmarketing-skills to Community Contributors

Developer marketing skills for AI agents — 33 skills covering HN strategy,
technical tutorials, docs-as-marketing, Reddit engagement, developer
onboarding, newsletters, SEO for devtools, and more.

MIT licensed, works with Claude Code, Cursor, Windsurf.

README.md

@@ -490,6 +490,7 @@ This collection would not be possible without the incredible work of the Claude
 - **[zircote/.claude](https://github.com/zircote/.claude)**: Shopify development skill reference.
 - **[vibeforge1111/vibeship-spawner-skills](https://github.com/vibeforge1111/vibeship-spawner-skills)**: AI Agents, Integrations, Maker Tools (57 skills, Apache 2.0).
 - **[coreyhaines31/marketingskills](https://github.com/coreyhaines31/marketingskills)**: Marketing skills for CRO, copywriting, SEO, paid ads, and growth (23 skills, MIT).
+- **[jonathimer/devmarketing-skills](https://github.com/jonathimer/devmarketing-skills)**: Developer marketing skills — HN strategy, technical tutorials, docs-as-marketing, Reddit engagement, developer onboarding, and more (33 skills, MIT).
 - **[Silverov/yandex-direct-skill](https://github.com/Silverov/yandex-direct-skill)**: Yandex Direct (API v5) advertising audit skill — 55 automated checks, A-F scoring, campaign/ad/keyword analysis for the Russian PPC market (MIT).
 - **[vudovn/antigravity-kit](https://github.com/vudovn/antigravity-kit)**: AI Agent templates with Skills, Agents, and Workflows (33 skills, MIT).
 - **[affaan-m/everything-claude-code](https://github.com/affaan-m/everything-claude-code)**: Complete Claude Code configuration collection from Anthropic hackathon winner - skills only (8 skills, MIT).