securitycenter fix yaml

Author: ziyeqf

specification/security/resource-manager/readme.md

@@ -908,6 +908,7 @@ These settings apply only when `--tag=package-2023-05` is specified on the comma
 ```yaml $(tag) == 'package-2023-05'
 input-file:
   - Microsoft.Security/stable/2023-05-01/serverVulnerabilityAssessmentsSettings.json
+```
 
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