fix: expose type is incorrect (#49)

Author: imwithye

package.json

@@ -3,7 +3,7 @@
   "version": "0.0.0",
   "description": "Remark for React Native",
   "main": "dist/index.mjs",
-  "types": "dist/index.d.ts",
+  "types": "dist/index.d.mts",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/imwithye/react-native-remark.git"