Fix redirect file name

Author: JasonWHowell

.openpublishing.publish.config.json

@@ -1254,7 +1254,7 @@
   "articles/spring-apps/.openpublishing.redirection.spring-apps.json",
   "articles/spring-cloud/.openpublishing.redirection.spring-cloud.json",
   "articles/static-web-apps/.openpublishing.redirection.static-web-apps.json",
-  "articles/storsimple/storsimple.redirection.json",
+  "articles/storsimple/.openpublishing.redirection.storsimple.json",
   "articles/stream-analytics/.openpublishing.redirection.stream-analytics.json",
   "articles/synapse-analytics/.openpublishing.redirection.synapse-analytics.json",
   "articles/virtual-machine-scale-sets/.openpublishing.redirection.virtual-machine-scale-sets.json",