Update automation-dsc-onboarding.md

Corrected captalization in Certificate expiration and re-registration section.

Author: jmorey4158

articles/automation/automation-dsc-onboarding.md

@@ -351,10 +351,10 @@ previous keys.
 After registering a machine as a DSC node in Azure Automation State Configuration, there are a
 number of reasons why you may need to re-register that node in the future:
 
-- For versions of Windows Server prior to Windows Server 2019, each node automatically negotiates a unique certificate for authentication that expires after one year. Currently, the PowerShell DSC registration protocol cannot automatically renew certificates when they are nearing expiration, so you need to re-register the nodes after a year's time. Before re-registering, ensure that each node is running Windows Management Framework 5.0 RTM. If a node's authentication certificate expires, and the node is not re-registered, the node is unable to communicate with Azure Automation and is marked 'Unresponsive.' re-registration performed 90 days or less from the certificate expiration time, or at any point after the certificate expiration time, will result in a new certificate being generated and used.  A resolution to this issue is included in Windows Server 2019 and later.
+- For versions of Windows Server prior to Windows Server 2019, each node automatically negotiates a unique certificate for authentication that expires after one year. Currently, the PowerShell DSC registration protocol cannot automatically renew certificates when they are nearing expiration, so you need to re-register the nodes after a year's time. Before re-registering, ensure that each node is running Windows Management Framework 5.0 RTM. If a node's authentication certificate expires, and the node is not re-registered, the node is unable to communicate with Azure Automation and is marked 'Unresponsive.' Re-registration performed 90 days or less from the certificate expiration time, or at any point after the certificate expiration time, will result in a new certificate being generated and used.  A resolution to this issue is included in Windows Server 2019 and later.
 - To change any [PowerShell DSC Local Configuration Manager values](/powershell/scripting/dsc/managing-nodes/metaConfig4) that were set during initial registration of the node, such as ConfigurationMode. Currently, these DSC agent values can only be changed through re-registration. The one exception is the Node Configuration assigned to the node -- this can be changed in Azure Automation DSC directly.
 
-re-registration can be performed in the same way you registered the node initially, using any of the
+Re-registration can be performed in the same way you registered the node initially, using any of the
 onboarding methods described in this document. You do not need to unregister a node from Azure
 Automation State Configuration before re-registering it.