Fix module entry

Author: devrnt

package.json

@@ -3,7 +3,7 @@
   "author": "devrnt <[email protected]>",
   "description": "React wizard (stepper) builder without the hassle, powered by hooks.",
   "homepage": "https://github.com/devrnt/react-use-wizard#readme",
-  "module": "dist/react-use-wizard.esm.js",
+  "module": "dist/react-use-wizard.mjs",
   "version": "2.2.1",
   "license": "MIT",
   "main": "dist/index.js",