Update examples/structure.json
Update examples/structure.json

rust-lang-cn/rust-by-example-cn,jinyuanxie/rust-by-example-cn,rust-lang-cn/rust-by-example-cn,jinyuanxie/rust-by-example-cn,aakloxu/rust-by-example-cn,aakloxu/rust-by-example-cn