Fixed JSON syntax errors in 8 translation files (German and French for
researcher, implementer, leader, about pages). Removed extra closing
braces that were breaking translation loading on production.
All translations now validated with json.tool and working correctly on
all audience pages.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
