docs.ps1: Removed duplicate environment variable setting
docs.ps1: Removed duplicate environment variable setting

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