Added missing newline at end of readiness.sh

Final line was getting lost when copied to container.

Author: alanconway

elasticsearch/probe/readiness.sh

@@ -76,4 +76,4 @@ for template_file in ${ES_HOME}/index_templates/*.json
 do
     template=`basename $template_file`
     check_index_exists "_template/${template}"
-done
+done