Add NUKE and Fluent Assertions as GitVersion users

docs/input/docs/learn/who.md

@@ -12,6 +12,7 @@ that we know about today.
 *   [ChocolateyGUI](https://github.com/chocolatey/ChocolateyGUI)
 *   [GitLink](https://github.com/GitTools/GitLink)
 *   [OctopusDeploy](https://github.com/OctopusDeploy)
+*   [NUKE](https://nuke.build)
 *   [Orc.\* packages](https://github.com/wildgums?query=orc)
 *   [Orchestra](https://github.com/wildgums/orchestra)
 *   [Pomona](http://pomona.io/)
@@ -20,6 +21,7 @@ that we know about today.
 *   [Splat](https://github.com/paulcbetts/splat)
 *   [ReactiveUI](https://github.com/reactiveui/reactiveui)
 *   [Uno Platform](https://platform.uno/)
+*   [Fluent Assertions](https://fluentassertions.com)
 
 If you are using GitVersion in your projects, and you are not listed above,
 please feel free to add a link to your project.