Update logstash.yml

Author: Chris Wiechmann

.github/workflows/logstash.yml

@@ -34,7 +34,8 @@ jobs:
     - name: Test Logstash pipeline
       run: |
         echo Using API_BUILDER_URL: $API_BUILDER_URL
+        echo Using MEMCACHED: $MEMCACHED
         ./logstash-filter-verifier --diff-command="diff -y" --keep-env=API_BUILDER_URL ./logstash/test ./logstash/pipeline
       env:
         API_BUILDER_URL: 'http://localhost:8080'
-        MEMCACHED: 'http://localhost:11211'
+        MEMCACHED: 'localhost:11211'