feat: sync content in English & Chinese

docs/zh/other-usage-of-flakes/inputs.md

@@ -35,6 +35,8 @@
 
     # 使用 `dir` 参数指定某个子目录
     nixpkgs.url = "github:foo/bar?dir=shu";
-  }
+  };
+
+  outputs = { self, ... }@inputs: { ... };
 }
 ```

docs/zh/other-usage-of-flakes/outputs.md

@@ -18,8 +18,12 @@
 NixOS Wiki 中给出的使用案例：
 
 ```nix
-{ self, ... }@inputs:
 {
+  inputs = {
+    # ......
+  };
+
+  outputs = { self, ... }@inputs: {
     # Executed by `nix flake check`
     checks."<system>"."<name>" = derivation;
     # Executed by `nix build .#<name>`
@@ -62,5 +66,6 @@ NixOS Wiki 中给出的使用案例：
     };
     # Used by `nix flake init -t <flake>`
     templates.default = { path = "<store-path>"; description = ""; };
+  };
 }
 ```