README: update alts

[CI SKIP]

README.md

@@ -7,9 +7,9 @@ Gogs [![Build Status](https://travis-ci.org/gogits/gogs.svg?branch=master)](http
 
 | Web | UI  | Preview  |
 |:-------------:|:-------:|:-------:|
-|![Dashboard](https://gogs.io/img/screenshots/1.png)|![Repository](https://gogs.io/img/screenshots/2.png)|![Commits History](https://gogs.io/img/screenshots/3.png)|
-|![Profile](https://gogs.io/img/screenshots/4.png)|![Admin Dashboard](https://gogs.io/img/screenshots/5.png)|![Diff](https://gogs.io/img/screenshots/6.png)|
-|![Issues](https://gogs.io/img/screenshots/7.png)|![Releases](https://gogs.io/img/screenshots/8.png)|![Organization](https://gogs.io/img/screenshots/9.png)|
+|![Dashboard](https://gogs.io/img/screenshots/1.png)|![Repository](https://gogs.io/img/screenshots/2.png)|![Editor](https://gogs.io/img/screenshots/3.png)|
+|![Profile](https://gogs.io/img/screenshots/4.png)|![Diff](https://gogs.io/img/screenshots/5.png)|![Repository Settings](https://gogs.io/img/screenshots/6.png?ts=20170322)|
+|![Webhook](https://gogs.io/img/screenshots/7.png)|![Organization](https://gogs.io/img/screenshots/8.png)|![Admin Dashboard](https://gogs.io/img/screenshots/9.png)|
 
 ### Important Notes