Updated healthchecks to show a link to documentation instead of trying to fix something that can often not be fixed automatically.

src/Umbraco.Core/HealthChecks/NotificationMethods/IMarkdownToHtmlConverter.cs

@@ -0,0 +1,7 @@
+namespace Umbraco.Core.HealthChecks.NotificationMethods
+{
+    public interface IMarkdownToHtmlConverter
+    {
+        string ToHtml(HealthCheckResults results, HealthCheckNotificationVerbosity verbosity);
+    }
+}