website/site/contributing/documentation.md: Fixed website port and minor typos
website/site/contributing/documentation.md: Fixed website port and minor typos

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