Add period to image caption.

Author: JamesJBarnett

articles/energy-data-services/how-to-manage-data-security-and-encryption.md

@@ -70,7 +70,7 @@ In addition to TLS, when you interact with Azure Data Manager for Energy, all tr
 
 8.	Next, select the user-assigned managed identity that is used to authorize access to the key vault that contains the key. 
 9.	Select "**Select a user identity**" Select the user-assigned managed identity that you created in the prerequisites. 
-    [![Screenshot of key vault, key, user assigned identity, and CMK on encryption tab](media/how-to-manage-data-security-and-encryption/customer-managed-key-3bb-select-managed-identity.png)](media/how-to-manage-data-security-and-encryption/customer-managed-key-3bb-select-managed-identity.png#lightbox)
+    [![Screenshot of key vault, key, user assigned identity, and CMK on encryption tab.](media/how-to-manage-data-security-and-encryption/customer-managed-key-3bb-select-managed-identity.png)](media/how-to-manage-data-security-and-encryption/customer-managed-key-3bb-select-managed-identity.png#lightbox)
 
 10.	This user assigned identity must have _get key_, _list key_, _wrap key_, and _unwrap key_ permissions on the key vault. For more information on assigning Azure Key Vault access policies, see [Assign a Key Vault Access Policy](/azure/key-vault/general/assign-access-policy).