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

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