Update onboard-management-group.md

Add spacing after the period for the end of the sentence

Author: lmhutch

articles/defender-for-cloud/onboard-management-group.md

@@ -35,7 +35,7 @@ To onboard a management group and all its subscriptions:
     The remediation task will then enable Defender for Cloud, for free, on the non-compliant subscriptions.
 
 > [!IMPORTANT]
-> The policy definition will only enable Defender for Cloud on **existing** subscriptions. To register newly created subscriptions, open the compliance tab, select the relevant non-compliant subscriptions, and create a remediation task.Repeat this step when you have one or more new subscriptions you want to monitor with Defender for Cloud.
+> The policy definition will only enable Defender for Cloud on **existing** subscriptions. To register newly created subscriptions, open the compliance tab, select the relevant non-compliant subscriptions, and create a remediation task.  Repeat this step when you have one or more new subscriptions you want to monitor with Defender for Cloud.
 
 ## Optional modifications