Alphabetize list of community beats (#2022)

libbeat/docs/communitybeats.asciidoc

@@ -31,14 +31,13 @@ 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/chrsblck/redisbeat[redisbeat]:: Used for Redis monitoring.
+https://github.com/martinhoefling/saltbeat[saltbeat]:: Reads events from salt master event bus.
 https://github.com/buehler/go-elastic-twitterbeat[twitterbeat]:: Reads tweets for specified screen names.
 https://github.com/gravitational/udpbeat[udpbeat]:: Ships structured logs via UDP.
 https://github.com/cleesmith/unifiedbeat[unifiedbeat]:: Reads records from Unified2 binary files generated by
 network intrusion detection software and indexes the records in Elasticsearch.
 https://github.com/mrkschan/uwsgibeat[uwsgibeat]:: Reads stats from uWSGI.
 https://github.com/eskibars/wmibeat[wmibeat]:: Uses WMI to grab your favorite, configurable Windows metrics.
-https://github.com/martinhoefling/saltbeat[saltbeat]:: Reads events from salt master event bus
-
 
 
 Have you created a Beat that's not listed? If so, add the name and description of your Beat to the source document for