fix(格式): 修复 config.go 代码格式问题

修复 golangci-lint gofmt 检查失败，移除 AllowInsecureHTTP 字段后多余的空格。 🤖 Generated with [Claude Code](https://claude.com/claude-code ) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

fix(格式): 修复 config.go 代码格式问题
修复 golangci-lint gofmt 检查失败，移除 AllowInsecureHTTP 字段后多余的空格。 🤖 Generated with [Claude Code](https://claude.com/claude-code ) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
3b7d0c42 · yangjianbo · 6451b3cd · 3b7d0c42
Commit 3b7d0c42 authored Jan 05, 2026 by yangjianbo
--- a/backend/internal/config/config.go
+++ b/backend/internal/config/config.go