doc: Assistance for terraform-provider-dynatrace is provided by Dynatrace Support

Author: arthurpitman

templates/index.md.tmpl

@@ -143,4 +143,4 @@ export DYNATRACE_DEBUG=true
 export DYNATRACE_LOG_HTTP=terraform-provider-dynatrace.http.log
 export DYNATRACE_HTTP_RESPONSE=true
 ```
-For any assistance, please create a [GitHub](https://github.com/dynatrace-oss/terraform-provider-dynatrace/issues) issue.
+For assistance, please contact the Dynatrace Support team as described on the [support page](https://support.dynatrace.com/).