style: fix prettier formatting in 404 page imports

Signed-off-by: Dhruv Goyal <dhruv621999goyal@gmail.com>

Author: DhruvGoyal404

src/theme/NotFound/Content/index.js

@@ -1,5 +1,5 @@
-import React, { useEffect } from "react";
-import { useHistory } from "@docusaurus/router";
+import React, {useEffect} from "react";
+import {useHistory} from "@docusaurus/router";
 
 /**
  * Custom 404 Page Component for Keploy Docs