[bulk] Validation: add missing descriptions.

Author: LSchaufMS

memdocs/configmgr/develop/osd/how-to-add-an-operating-system-deployment-task-sequence-action.md

@@ -1,6 +1,7 @@
 ---
 title: "Add an OS Deployment Task Sequence Action"
 titleSuffix: "Configuration Manager"
+description: "Add an OS deployment task sequence action to a task sequence by creating an instance of an SMS_TaskSequence_Action derived class, and then add it to the steps of the task sequence."
 ms.date: "09/20/2016"
 ms.prod: "configuration-manager"
 ms.technology: configmgr-sdk

memdocs/configmgr/develop/reference/osd/sms_tasksequence_capturesystemimageaction-server-wmi-class.md

@@ -1,6 +1,7 @@
 ---
 title: "SMS_TaskSequence_CaptureSystemImageAction Class"
 titleSuffix: "Configuration Manager"
+description: "The SMS_TaskSequence_CaptureSystemImageAction class represents a task sequence action that specifies an existing network share and WIM file to use when saving the image."
 ms.date: "09/20/2016"
 ms.prod: "configuration-manager"
 ms.technology: configmgr-sdk

memdocs/configmgr/develop/reference/osd/sms_tasksequencereferencesinfo-server-wmi-class.md

@@ -1,6 +1,7 @@
 ---
 title: "SMS_TaskSequenceReferencesInfo Class"
 titleSuffix: "Configuration Manager"
+description: "The SMS_TaskSequenceReferencesInfo class associates a task sequence with its package."
 ms.date: "09/20/2016"
 ms.prod: "configuration-manager"
 ms.technology: configmgr-sdk

memdocs/configmgr/develop/reference/protect/sms_topthreatsdetected-server-wmi-class.md

@@ -1,6 +1,7 @@
 ---
 title: "SMS_TopThreatsDetected Class"
 titleSuffix: "Configuration Manager"
+description: "The SMS_TopThreatsDetected class summarizes the top threats found in the last 24 hours per collection."
 ms.date: "09/20/2016"
 ms.prod: "configuration-manager"
 ms.technology: configmgr-sdk