website/docs: add grafana dashboard (#21254)

* website/docs: add grafana dashboard

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* Optimised images with calibre/image-actions

* Optimised images with calibre/image-actions

---------

Signed-off-by: Jens Langhammer <jens@goauthentik.io>
Co-authored-by: authentik-automation[bot] <135050075+authentik-automation[bot]@users.noreply.github.com>

cspell.config.jsonc

@@ -275,10 +275,11 @@
         "htmlcov", // Coverage HTML output
         "coverage.txt", // Coverage text output
         //#endregion
-        //#region Media
+        //#region Media/Static
         "./data", // Media files
         "./media", // Legacy media files
-        "*.{png,jpg,pdf,svg}" // Binary files
+        "*.{png,jpg,pdf,svg}", // Binary files
+        "*dashboard.json" // Dashboards
         //#endregion
     ],
     "useGitignore": true,

website/docs/sys-mgmt/ops/monitoring.md

@@ -26,6 +26,6 @@ Both Docker Compose and Kubernetes deployments use these methods by default to d
 
 Both the core authentik server, worker and any outposts expose Prometheus metrics on a separate port (9300), which can be scraped to gather further insight into authentik's state. The metrics require no authentication, as they are hosted on a separate, non-exposed port by default.
 
-You can find an example dashboard here: [grafana.com](https://grafana.com/grafana/dashboards/14837-authentik/)
+You can download an example dashboard [here](/monitoring/grafana-dashboard.json).
 
-![](../../install-config/dashboard.png)
+![](./dashboard.png)