website: Added API docs link for 4.8.0-beta00015
website: Added API docs link for 4.8.0-beta00015

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