Docs: Refactor data sources content (#57573)

* Docs: Revise data source index

* Docs: Consolidate data source administration docs

* Docs: Revise panels docs related to data sources

* Docs: Revise Alertmanager data source

* Docs: Reorganize AWS CloudWatch data source docs

* Docs: Reorganize Azure Monitor data source docs

* Docs: Move azuremonitor to azure-monitor

* Docs: Revise Elasticsearch docs

* Docs: Move Elasticsearch index into bundle

* Docs: Revise GCM docs

* Docs: Revise Graphite docs

* Docs: Move Graphite index into bundle

* Docs: Revise InfluxDB docs

* Docs: Revise Jaeger docs

* Docs: Move Jaeger index into bundle

* Docs: Revise Loki docs

* Docs: Move Loki index into bundle

* Docs: Revise MS SQL docs

* Docs: Move MS SQL index into bundle

* Docs: Revise Prometheus docs

* Docs: Move Prometheus index into bundle

* Docs: Revise Tempo docs

* Docs: Move Tempo index into bundle

* Docs: Revise TestData DB docs

* Docs: Move TestData DB index into bundle

* Docs: Revise Zipkin docs

* Docs: Move Zipkin index into bundle

* Docs: Move other data sources' index pages into bundles

* Docs: Revise frontmatter

* Fixing hugo markdown errors

* Docs: Add query editor and template var sections to overview doc

* Docs: Remove CTAs across data source docs

* Docs: Remove CTA

* Docs: Remove CTA

* Docs: Fix links, images, typos, and usage consistency.

* Docs: Fix typos

* Docs: Fix CI issues

* Update docs/sources/datasources/_index.md

Co-authored-by: Torkel Ödegaard <torkel@grafana.com>

* Update docs/sources/datasources/_index.md

Co-authored-by: Torkel Ödegaard <torkel@grafana.com>

* Docs: Fix query editor links

* Update docs/sources/panels-visualizations/_index.md

Co-authored-by: Torkel Ödegaard <torkel@grafana.com>

* Update docs/sources/panels-visualizations/_index.md

Co-authored-by: Torkel Ödegaard <torkel@grafana.com>

* Docs: Rebundle child pages per writers' toolkit

* Docs: Fix prettier for CI

* Docs: Fix relrefs from outside data sources docs

* Docs: Fix broken relrefs within datasources

* Docs: Fix relrefs to data sources docs

* Fixed some more refs

Co-authored-by: Torkel Ödegaard <torkel@grafana.com>

docs/sources/panels-visualizations/_index.md

@@ -16,11 +16,17 @@ keywords:
 
 # Panels and visualizations
 
-The _panel_ is the basic visualization building block in Grafana. Each panel has a query editor specific to the data source selected in the panel. The query editor allows you to extract the perfect visualization to display on the panel.
+The _panel_ is the basic visualization building block in Grafana.
+Each panel has a query editor specific to the data source selected in the panel.
+The query editor allows you to build a query that returns the data you want to visualize.
 
-There are a wide variety of styling and formatting options for each panel. Panels can be dragged and dropped and rearranged on the dashboard. They can also be resized.
+There are a wide variety of styling and formatting options for each panel.
+Panels can be dragged, dropped, and resized to rearrange them on the dashboard.
 
-Before you begin, ensure that you have configured a data source. For more information about data sources, refer to [Data Sources]({{< relref "../administration/data-source-management/" >}}).
+Before you add a panel, ensure that you have configured a data source.
+
+- For more information about adding and managing data sources as an administrator, refer to [Data source management]({{< relref "../administration/data-source-management/" >}}).
+- For details about using specific data sources, refer to [Data sources]({{< relref "../datasources/" >}}).
 
 This section includes the following sub topics: