Docs: Add Schema maturity docs (#61963)

* Docs: Add Schema maturity docs

* Remove 'which category' section from maturity.md

Co-authored-by: sam boyer <sdboyer@grafana.com>

* Remove Maturity process guides from maturity.md

Co-authored-by: sam boyer <sdboyer@grafana.com>

* Remove Defaults and Field optionality from maturity.md

Co-authored-by: sam boyer <sdboyer@grafana.com>

* Remove MaybeRemove section from maturity.md

Co-authored-by: sam boyer <sdboyer@grafana.com>

* Remove Milestone 3 and 4 from maturity.md

Co-authored-by: sam boyer <sdboyer@grafana.com>

* Rearrange schema maturity docs

* Regenerate schema docs after merge with main

* Update Maturity docs headers, keep single h1

* Update wording in Schema docs

Co-authored-by: Tania <yalyna.ts@gmail.com>

* Regenerate docs after merge with main

---------

Co-authored-by: sam boyer <sdboyer@grafana.com>
Co-authored-by: Tania <yalyna.ts@gmail.com>

docs/sources/developers/kinds/core/dashboard/schema-reference.md

@@ -8,7 +8,7 @@ title: Dashboard kind
 
 ## Dashboard
 
-#### Maturity: experimental
+#### Maturity: [experimental](../../../maturity/#experimental)
 #### Version: 0.0
 
 A Grafana dashboard.

docs/sources/developers/kinds/core/librarypanel/schema-reference.md

@@ -8,7 +8,7 @@ title: LibraryPanel kind
 
 ## LibraryPanel
 
-#### Maturity: experimental
+#### Maturity: [experimental](../../../maturity/#experimental)
 #### Version: 0.0
 
 A standalone panel

docs/sources/developers/kinds/core/playlist/schema-reference.md

@@ -8,7 +8,7 @@ title: Playlist kind
 
 ## Playlist
 
-#### Maturity: merged
+#### Maturity: [merged](../../../maturity/#merged)
 #### Version: 0.0
 
 A playlist is a series of dashboards that is automatically rotated in the browser, on a configurable interval.

docs/sources/developers/kinds/core/preferences/schema-reference.md

@@ -8,7 +8,7 @@ title: Preferences kind
 
 ## Preferences
 
-#### Maturity: merged
+#### Maturity: [merged](../../../maturity/#merged)
 #### Version: 0.0
 
 The user or team frontend preferences

docs/sources/developers/kinds/core/publicdashboard/schema-reference.md

@@ -8,7 +8,7 @@ title: PublicDashboard kind
 
 ## PublicDashboard
 
-#### Maturity: merged
+#### Maturity: [merged](../../../maturity/#merged)
 #### Version: 0.0
 
 Public dashboard configuration

docs/sources/developers/kinds/core/serviceaccount/schema-reference.md

@@ -8,7 +8,7 @@ title: ServiceAccount kind
 
 ## ServiceAccount
 
-#### Maturity: merged
+#### Maturity: [merged](../../../maturity/#merged)
 #### Version: 0.0
 
 system account

docs/sources/developers/kinds/core/team/schema-reference.md

@@ -8,7 +8,7 @@ title: Team kind
 
 ## Team
 
-#### Maturity: merged
+#### Maturity: [merged](../../../maturity/#merged)
 #### Version: 0.0
 
 A team is a named grouping of Grafana users to which access control rules may be assigned.