.github/workflows/Lucene-Net-Documentation.yml: Added .NET 6 SDK setup prior to running docs.ps1
.github/workflows/Lucene-Net-Documentation.yml: Added .NET 6 SDK setup prior to running docs.ps1

jeme/lucenenet,apache/lucenenet,jeme/lucenenet,jeme/lucenenet,NightOwl888/lucenenet,jeme/lucenenet,apache/lucenenet,NightOwl888/lucenenet,NightOwl888/lucenenet,NightOwl888/lucenenet,apache/lucenenet,apache/lucenenet