From e5ff8f53f5ee8912fec034f1f02f5def87d7b37d Mon Sep 17 00:00:00 2001
From: Qinhua H <qinhuah@gmail.com>
Date: Thu, 18 Jul 2019 16:45:40 +0800
Subject: [PATCH] Update the link to search4e.ipynb

The "search-4e.ipynb" in line 21 is a typo for search4e.ipynb. File search-4e.ipynb does not exist. It will show 404 error.
---
 index.ipynb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.ipynb b/index.ipynb
index 2ae5742bb..f9da121f2 100644
--- a/index.ipynb
+++ b/index.ipynb
@@ -18,7 +18,7 @@
     "\n",
     "3. [**Search**](./search.ipynb)\n",
     "\n",
-    "4. [**Search - 4th edition**](./search-4e.ipynb)\n",
+    "4. [**Search - 4th edition**](./search4e.ipynb)\n",
     "\n",
     "4. [**Games**](./games.ipynb)\n",
     "\n",