Merge pull request #1706 from infosiftr/logstash-links

Update logstash github-repo and issues to be similar to elasticsearch + kibana

logstash/github-repo

@@ -1 +1 @@
-https://github.com/elastic/logstash-docker
+https://github.com/elastic/logstash

logstash/issues.md

@@ -1 +1 @@
-%%GITHUB-REPO%%/issues
+For issues with Logstash Docker Image or Logstash: %%GITHUB-REPO%%/issues