Fix lint-staged not allowing edits to Markdown files (#1402)

* Remove unnecessary overrides config

* Only lint-staged code files

package.json

@@ -252,6 +252,6 @@
     ]
   },
   "lint-staged": {
-    "*": "yarn eslint --ext .js,.jsx,.ts,.tsx --fix"
+    "*{.js,.jsx,.ts,.tsx}": "yarn eslint --fix"
   }
 }