DOCSP-40573 -- remove duplicate spec entry (#1739)

Author: jvincent-mongodb

source/reference/k8s-operator-specification.txt

@@ -290,7 +290,6 @@ The following settings apply only to sharded cluster resource types:
 .. include:: /includes/setting-k8sScConf-spec.shardPodSpec.rst
 .. include:: /includes/setting-k8sScConf-spec.shardPodSpec.persistence.multiple.data.rst
 .. include:: /includes/setting-k8sScConf-spec.shardPodSpec.persistence.single.rst
-.. include:: /includes/setting-k8sScConf-spec.shardPodSpec.persistence.multiple.data.rst
 .. include:: /includes/setting-k8sScConf-spec.shardPodSpec.persistence.multiple.journal.rst
 .. include:: /includes/setting-k8sScConf-spec.shardPodSpec.persistence.multiple.logs.rst
 .. include:: /includes/setting-k8sScConf-spec.shardPodSpec.podTemplate.rst