Update README.md (#17601)

Author: aliciascott

cisco_sdwan/README.md

@@ -41,5 +41,5 @@ Need help? Contact [Datadog support][7].
 [3]: https://docs.datadoghq.com/agent/kubernetes/integrations/
 [4]: https://github.com/DataDog/datadog-agent/blob/main/cmd/agent/dist/conf.d/cisco_sdwan.d/conf.yaml.example
 [5]: https://docs.datadoghq.com/agent/guide/agent-commands/#start-stop-and-restart-the-agent
-[6]: https://github.com/DataDog/integrations-core/blob/master/cisco_sd_wan/metadata.csv
+[6]: https://github.com/DataDog/integrations-core/blob/master/cisco_sdwan/metadata.csv
 [7]: https://docs.datadoghq.com/help/