add empty line at the end of the table

Author: dotanpatrich

articles/security-center/alerts-reference.md

@@ -243,6 +243,7 @@ At the bottom of this page, there's a table describing the Azure Security Center
 | **Website is tagged as malicious in threat intelligence feed**<br>(AppServices_SmartScreen)                                              | Your website as described below is marked as a malicious site by Windows SmartScreen. If you think this is a false positive, contact Windows SmartScreen via report feedback link provided.<br>(Applies to: App Service on Windows and App Service on Linux)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | Collection                                                         | Medium   |
 | **Possible loss of data detected**<br>(AppServices_DataEgressArtifacts)| Analysis of host/device data detected a possible data egress condition. Attackers will often egress data from machines they have compromised.<br>(Applies to: App Service on Linux)|Collection, Exfiltration|Medium||
 | **Detected suspicious file download**<br>(AppServices_SuspectDownloadArtifacts)|Analysis of host data has detected suspicious download of remote file.<br>(Applies to: App Service on Linux)|Persistence|Medium|
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 ## <a name="alerts-k8scluster"></a>Alerts for containers - Kubernetes clusters