fix links to windows build artifacts [skip ci]

Author: jakoch

README.md

@@ -8,7 +8,7 @@
 | Continuous Integration | Linux |   Mac    | Windows |
 |:----------------------:|:-----:|:--------:|:-------:|
 | **Build Status** | [![Travis Build Status](https://travis-ci.org/fifengine/fifechan.svg?branch=master)](https://travis-ci.org/fifengine/fifechan) | [![Travis Build Status](https://travis-ci.org/fifengine/fifechan.svg?branch=master)](https://travis-ci.org/fifengine/fifechan) | [![Appveyor Build status](https://ci.appveyor.com/api/projects/status/github/fifengine/fifechan?branch=master&svg=true)](https://ci.appveyor.com/project/LinuxDonald/fifechan) | 
-| **Development Releases**  |   -    |    -     | [All artifacts](https://ci.appveyor.com/project/LinuxDonald/fifechan/build/artifacts) <br> [fifechan-shared-VC14.zip](https://ci.appveyor.com/api/projects/LinuxDonald/fifechan/artifacts/fifechan-shared-VC14.zip) <br> [fifechan-static-VC14.zip](https://ci.appveyor.com/api/projects/LinuxDonald/fifechan/artifacts/fifechan-static-VC14.zip) |
+| **Development Releases**  |   -    |    -     | [All artifacts](https://ci.appveyor.com/project/LinuxDonald/fifechan/build/artifacts) <br> [fifechan-shared-VC15-x86.zip](https://ci.appveyor.com/api/projects/LinuxDonald/fifechan/artifacts/fifechan-shared-VC15-x86.zip) <br> [fifechan-static-VC15-x86.zip](https://ci.appveyor.com/api/projects/LinuxDonald/fifechan/artifacts/fifechan-static-VC15-x86.zip) |
 
 Fifechan is also already available from the following package repositories: