.NET: Fix build status icon in README
<a href="https://www.myget.org/gallery/apache-ignite-net-nightly"><img src="https://img.shields.io/myget/apache-ignite-net-nightly/vpre/Apache.Ignite.svg" /></a>
-<a href="http://ci.ignite.apache.org/viewType.html?buildTypeId=Ignite20Tests_IgnitePlatformNet&branch_IgniteTests=%3Cdefault%3E"><img src="http://ci.ignite.apache.org/app/rest/builds/buildType:(id:Ignite20Tests_IgnitePlatformNet)/statusIcon" /></a>
+<a href="https://ci.ignite.apache.org/viewType.html?buildTypeId=IgniteTests24Java8_IgnitePlatformNet&branch_IgniteTests24Java8=<default>"><img src="http://ci.ignite.apache.org/app/rest/builds/buildType:(id:IgniteTests24Java8_IgnitePlatformNet)/statusIcon" /></a>
## Getting Started
