minor change in appveyor badge

Author: Ethiy

README.md

@@ -4,7 +4,7 @@
 | ------------------------ |:-------------:|
 | Linux                    | [![Build Status](https://travis-ci.org/Ethiy/3DSceneModel.svg?branch=master)](https://travis-ci.org/Ethiy/3DSceneModel)|
 | Darwin                   |[![Build Status](https://travis-ci.org/Ethiy/3DSceneModel.svg?branch=master)](https://travis-ci.org/Ethiy/3DSceneModel)|
-| Windows                  | [![Build Status](https://ci.appveyor.com/api/projects/status/855pa36o55g3hwq7?svg=true)](https://ci.appveyor.com/project/Ethiy/3DSceneModel/branch/master)|
+| Windows                  | [![Build Status](https://ci.appveyor.com/api/projects/status/855pa36o55g3hwq7/branch/master?svg=true)](https://ci.appveyor.com/project/Ethiy/3DSceneModel/branch/master)|
 | Coverity Scan            |[![Coverity Scan Build Status](https://scan.coverity.com/projects/11095/badge.svg)](https://scan.coverity.com/projects/3dscenemodel)|
 
 Playing with 3D formats.