Update sp-elasticsearch.conf

Fixed hardcoded ES version value

Author: collymore

gitpod/sp-elasticsearch.conf

@@ -1,5 +1,5 @@
 [program:elasticsearch]
-command=/bin/bash -c  "/home/gitpod/elasticsearch-7.9.3/bin/elasticsearch -p /home/gitpod/elasticsearch-7.9.3/pid -Ediscovery.type=single-node"
+command=/bin/bash -c  "/home/gitpod/elasticsearch-$ELASTICSEARCH_VERSION/bin/elasticsearch -p /home/gitpod/elasticsearch-$ELASTICSEARCH_VERSION/pid -Ediscovery.type=single-node"
 process_name=%(program_name)s
 #priority=1001
 autostart=true