Merge pull request #207459 from RobdeJong/patch-157

Update how-to-connect-health-agent-install.md

Author: PRMerger10

articles/active-directory/hybrid/how-to-connect-health-agent-install.md

@@ -47,6 +47,8 @@ The following table lists requirements for using Azure AD Connect Health.
 > [!NOTE]
 > If you have a highly locked-down and restricted environment, you need to add more URLs than the ones the table lists for Internet Explorer enhanced security. Also add URLs that are listed in the table in the next section.  
 
+### New versions of the agent and Auto upgrade
+If a new version of the Health agent is released, any existing installed agents are automatically updated.
 
 ### Outbound connectivity to the Azure service endpoints