Fix entry point.

Author: dajiaji

x/dhkem-x25519/dnt.ts

@@ -29,14 +29,14 @@ await build({
     },
     homepage: "https://github.com/dajiaji/hpke-js#readme",
     license: "MIT",
-    module: "./esm/x/dhkem-x25519/mod.js",
-    main: "./script/x/dhkem-x25519/mod.js",
-    types: "./esm/x/dhkem-x25519/mod.d.ts",
+    module: "./esm/dhkem-x25519/mod.js",
+    main: "./script/dhkem-x25519/mod.js",
+    types: "./esm/dhkem-x25519/mod.d.ts",
     sideEffects: false,
     exports: {
       ".": {
-        "import": "./esm/x/dhkem-x25519/mod.js",
-        "require": "./script/x/dhkem-x25519/mod.js",
+        "import": "./esm/dhkem-x25519/mod.js",
+        "require": "./script/dhkem-x25519/mod.js",
       },
       "./package.json": "./package.json",
     },