docs: Delete redundant oauth-web.md (#1142)

diff --git a/docs/README.md b/docs/README.md
index 81a37f3..bd041c9 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -20,7 +20,7 @@
 - [Auth](auth.md)
   - [API Keys](api-keys.md)
   - [OAuth 2.0](oauth.md)
-  - [OAuth 2.0 for Web Server Applications](oauth-web.md)
+  - [OAuth 2.0 for Web Server Applications](https://developers.google.com/identity/protocols/oauth2/web-server)
   - [OAuth 2.0 for Installed Applications](oauth-installed.md)
   - [OAuth 2.0 for Server to Server Applications](oauth-server.md)
   - [Client Secrets](client-secrets.md)