fix(UI): replace WikiHow reference with DIY repair guides

WikiHow ZIM files were deprecated by Kiwix after WikiHow requested
removal to protect their content from LLM training harvesting.
Replace with "DIY repair guides and how-to content" which accurately
reflects the iFixit, Stack Exchange, and other how-to content
available in NOMAD's curated collections.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people

admin/inertia/pages/easy-setup/index.tsx

@@ -43,7 +43,7 @@ function buildCoreCapabilities(aiAssistantName: string): Capability[] {
       features: [
         'Complete Wikipedia offline',
         'Medical references and first aid guides',
-        'WikiHow articles and tutorials',
+        'DIY repair guides and how-to content',
         'Project Gutenberg books and literature',
       ],
       services: [SERVICE_NAMES.KIWIX],