Remove exports nesting

Author: abraham

package.json

@@ -4,10 +4,8 @@
   "description": "Lightweight ES Module implementation of reflect-metadata",
   "type": "module",
   "exports": {
-    ".": {
-      "import": "./dist/index.js",
-      "require": "./dist/index.umd.js"
-    }
+    "import": "./dist/index.js",
+    "require": "./dist/index.umd.js"
   },
   "main": "./dist/index.umd.js",
   "module": "./dist/index.js",