Including protologbeat in list of community beats (#4348)

libbeat/docs/communitybeats.asciidoc

@@ -50,6 +50,7 @@ https://github.com/kozlice/phpfpmbeat[phpfpmbeat]:: Reads status from PHP-FPM.
 https://github.com/joshuar/pingbeat[pingbeat]:: Sends ICMP pings to a list
 of targets and stores the round trip time (RTT) in Elasticsearch.
 https://github.com/carlpett/prombeat[prombeat]:: Indexes https://prometheus.io[Prometheus] metrics.
+https://github.com/hartfordfive/protologbeat[protologbeat]:: Accepts structure and unstructured logs via UDP or TCP.  Can also be used to receive syslog messages or GELF formated messages. (To be used as successor to udplogbeat)
 https://github.com/voigt/redditbeat[redditbeat]:: Collects new Reddit Submissions of one or multiple Subreddits.
 https://github.com/chrsblck/redisbeat[redisbeat]:: Used for Redis monitoring.
 https://github.com/consulthys/retsbeat[retsbeat]:: Collects counts of http://www.reso.org[RETS] resource/class records from https://en.wikipedia.org/wiki/Multiple_listing_service[Multiple Listing Service] (MLS) servers.