[v10.0.x] Docs: Backport of 69864 - Plugins reorganization (#71100)

* Docs: Plugins doc reorganization, part 1  (#69864)

* Initial commit

* Prettier fixes

* Doc-validator fixes part 1

* Doc-validator fixes part 2

* More doc-validator fixes

* More doc-validator fixes

* Test

* link test

* Linnk test

* Link test

* More fixes

* More fixes

* Doc-validator fixes

* Doc-validator fixes

* fix broken link

* Fix

* Testing

* Doc fixes

* Link fixes

* Fix links

* Update docs/sources/developers/plugins/create-a-grafana-plugin/_index.md

Co-authored-by: David Harris <david.harris@grafana.com>

* Testing

* Testing

* Testing

* Testing

* Doc-validator fixes

* Doc-validator fixes

* Doc-validator fixes

* Fix broken links for plugins reorganization project

* Prettier fixes

* Prettier fixes

* Incorporate reviewer feedback

* Link fixes

* Link fixes

* Link fixes

* Link fix

* Deleted space

* Codeowners fix

* Change grafana.com links to absolute URLs for Hugo

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Co-authored-by: David Harris <david.harris@grafana.com>
(cherry picked from commit f9df1f3051)

* Prettier fix

docs/sources/datasources/mssql/query-editor/index.md

@@ -220,7 +220,7 @@ The resulting table panel:
 If you set the **Format** setting in the query editor to **Time series**, then the query must have a column named `time` that returns either a SQL datetime or any numeric datatype representing Unix epoch in seconds.
 Result sets of time series queries must also be sorted by time for panels to properly visualize the result.
 
-A time series query result is returned in a [wide data frame format]({{< relref "../../../developers/plugins/data-frames#wide-format" >}}).
+A time series query result is returned in a [wide data frame format]({{< relref "../../../developers/plugins/introduction-to-plugin-development/data-frames#wide-format" >}}).
 Any column except time or of type string transforms into value fields in the data frame query result.
 Any string column transforms into field labels in the data frame query result.