change link for sidecar security (#3011)

Signed-off-by: Hannah Hunter <[email protected]>

Signed-off-by: Hannah Hunter <[email protected]>

Author: hhunter-ms

daprdocs/content/en/developing-applications/building-blocks/service-invocation/service-invocation-overview.md

@@ -134,4 +134,4 @@ For quick testing, try using the Dapr CLI for service invocation:
 - Read the [service invocation API specification]({{< ref service_invocation_api.md >}}). This reference guide for service invocation describes how to invoke methods on other services.
 - Understand the [service invocation performance numbers]({{< ref perf-service-invocation.md >}}).
 - Take a look at [observability]({{< ref monitoring.md >}}). Here you can dig into Dapr's monitoring tools like tracing, metrics and logging.
-- Read up on our [security practices]({{< ref monitoring.md >}}) around mTLS encryption, token authentication, and endpoint authorization.
+- Read up on our [security practices]({{< ref security-concept.md >}}) around mTLS encryption, token authentication, and endpoint authorization.