sentry isn't installed by default in self-hosted mode (#2366)

* sentry isn't installed by default in self-hosted mode

Fixes: #2365

Signed-off-by: Doug Davis <dug@microsoft.com>

* Update daprdocs/content/en/concepts/dapr-services/sentry.md

Co-authored-by: greenie-msft <56556602+greenie-msft@users.noreply.github.com>
Co-authored-by: Mark Fussell <markfussell@gmail.com>

daprdocs/content/en/concepts/dapr-services/sentry.md

@@ -9,7 +9,10 @@ The Dapr Sentry service manages mTLS between services and acts as a certificate
 
 ## Self-hosted mode
 
-The sentry service Docker container is started automatically as part of [`dapr init`]({{< ref self-hosted-with-docker.md >}}). It can also be run manually as a process if you are running in [slim-init mode]({{< ref self-hosted-no-docker.md >}}).
+The Sentry service Docker container is not started automatically as part of [`dapr init`]({{< ref self-hosted-with-docker.md >}}). However it can be executed manually by following the instructions for setting up [mutual TLS]({{< ref "mtls.md#self-hosted" >}}).
+
+
+It can also be run manually as a process if you are running in [slim-init mode]({{< ref self-hosted-no-docker.md >}}).
 
 <img src="/images/security-mTLS-sentry-selfhosted.png" width=1000>
 
@@ -23,4 +26,4 @@ The sentry service is deployed as part of `dapr init -k`, or via the Dapr Helm c
 
 - [Security overview]({{< ref security-concept.md >}})
 - [Self-hosted mode]({{< ref self-hosted-with-docker.md >}})
-- [Kubernetes mode]({{< ref kubernetes >}})
+- [Kubernetes mode]({{< ref kubernetes >}})