Update lint-staged config to remove the git add (as instructed in warning message)

Author: mpeyper

package.json

@@ -96,8 +96,7 @@
   },
   "lint-staged": {
     "*.{js,ts,json,yml,md,mdx}": [
-      "prettier-eslint --write",
-      "git add"
+      "prettier-eslint --write"
     ]
   }
 }