fix: point entrypoint to index.js

Author: Skn0tt

package.json

@@ -4,8 +4,8 @@
   "version": "0.0.0",
   "description": "A parser for Netlify's in-source-config",
   "type": "module",
-  "main": "./dist/main.js",
-  "exports": "./dist/main.js",
+  "main": "./dist/index.js",
+  "exports": "./dist/index.js",
   "files": [
     "dist/**/*.js",
     "dist/**/*.d.ts"