Docs: updates for file-based menu (#28500)

* initial

* cleanup

* remove bad aliases

* cleanup, fix links

* add docs-file-based-command

* update docs

* update readme

* fix broken links

* fix spelling

Co-authored-by: Diana Payton <52059945+oddlittlebird@users.noreply.github.com>

docs/sources/getting-started/getting-started.md

@@ -2,11 +2,7 @@
 title = "Getting started with Grafana"
 description = "Guide for getting started with Grafana"
 keywords = ["grafana", "intro", "guide", "started"]
-type = "docs"
 aliases = ["/docs/grafana/latest/guides/gettingstarted","/docs/grafana/latest/guides/getting_started"]
-[menu.docs]
-identifier = "getting_started-grafana"
-parent = "guides"
 weight = 200
 +++
 
@@ -43,7 +39,7 @@ To create your first dashboard:
 
 ## Next steps
 
- Continue to experiment with what you have built, try the [explore workflow]({{< relref "../explore/index.md" >}}) or another visualization feature. Refer to [Data sources]({{< relref "../datasources/_index.md" >}}) for a list of supported data sources and instructions on how to [add a data source]({{< relref "../datasources/add-a-data-source.md" >}}). The following topics will be of interest to you:  
+ Continue to experiment with what you have built, try the [explore workflow]({{< relref "../explore/index.md" >}}) or another visualization feature. Refer to [Data sources]({{< relref "../datasources" >}}) for a list of supported data sources and instructions on how to [add a data source]({{< relref "../datasources/add-a-data-source.md" >}}). The following topics will be of interest to you:
 
 - [Panels]({{< relref "../panels/panels-overview.md" >}})
 - [Dashboards]({{< relref "../dashboards/_index.md" >}})