docs: websites/apidocs/index.md: Updated links to OpenNLP and Highlighter projects, commented TODO work
docs: websites/apidocs/index.md: Updated links to OpenNLP and Highlighter projects, commented TODO work

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