[skip ci] update gemspec summary

Author: jsvd

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 4.0.13
+  - Update gemspec summary
+
 ## 4.0.12
  - Fix bug where output would fail if the s3 bucket had encryption enabled (#146, #155)
 

logstash-output-s3.gemspec

@@ -1,8 +1,8 @@
 Gem::Specification.new do |s|
   s.name            = 'logstash-output-s3'
-  s.version         = '4.0.12'
+  s.version         = '4.0.13'
   s.licenses        = ['Apache-2.0']
-  s.summary         = "This plugin was created for store the logstash's events into Amazon Simple Storage Service (Amazon S3)"
+  s.summary         = "Sends Logstash events to the Amazon Simple Storage Service"
   s.description     = "This gem is a Logstash plugin required to be installed on top of the Logstash core pipeline using $LS_HOME/bin/logstash-plugin install gemname. This gem is not a stand-alone program"
   s.authors         = ["Elastic"]
   s.email           = '[email protected]'