chore: fix packages.json 'main' file path

Author: LouisHaftmann

package.json

@@ -16,7 +16,7 @@
     "tanstack-query",
     "typescript"
   ],
-  "main": "dist/index.js",
+  "main": "dist/index.cjs",
   "module": "dist/index.mjs",
   "types": "dist/index.d.ts",
   "files": [