Cleanup/codeowners (#82146)

* Cleanup codeowners

* Add missing readmes

* Fix typos

.github/CODEOWNERS

@@ -39,10 +39,6 @@
 #CC# /src/legacy/core_plugins/vis_type_vislib/ @elastic/kibana-app
 #CC# /src/legacy/server/url_shortening/ @elastic/kibana-app
 #CC# /src/legacy/ui/public/state_management @elastic/kibana-app
-#CC# /src/plugins/advanced_settings/ @elastic/kibana-app
-#CC# /src/plugins/charts/ @elastic/kibana-app
-#CC# /src/plugins/index_pattern_management/public @elastic/kibana-app
-#CC# /src/plugins/vis_default_editor @elastic/kibana-app
 
 # App Architecture
 /examples/bfetch_explorer/ @elastic/kibana-app-arch
@@ -74,7 +70,7 @@
 /x-pack/plugins/embeddable_enhanced/ @elastic/kibana-app-arch
 /x-pack/plugins/ui_actions_enhanced/ @elastic/kibana-app-arch
 #CC# /src/plugins/bfetch/ @elastic/kibana-app-arch
-#CC# /src/plugins/index_pattern_management/public/service @elastic/kibana-app-arch
+#CC# /src/plugins/index_pattern_management/ @elastic/kibana-app-arch
 #CC# /src/plugins/inspector/ @elastic/kibana-app-arch
 #CC# /src/plugins/share/ @elastic/kibana-app-arch
 #CC# /x-pack/plugins/advanced_ui_actions/ @elastic/kibana-app-arch

docs/developer/plugin-list.asciidoc

@@ -22,8 +22,10 @@ NOTE:
 |Description
 
 
-|{kib-repo}blob/{branch}/src/plugins/advanced_settings[advancedSettings]
-|WARNING: Missing README.
+|{kib-repo}blob/{branch}/src/plugins/advanced_settings/README.md[advancedSettings]
+|This plugin contains the advanced settings management section
+allowing users to configure their advanced settings, also known
+as uiSettings within the code.
 
 
 |{kib-repo}blob/{branch}/src/plugins/apm_oss[apmOss]
@@ -130,8 +132,10 @@ in Kibana, e.g. visualizations. It has the form of a flyout panel.
 |WARNING: Missing README.
 
 
-|{kib-repo}blob/{branch}/src/plugins/management[management]
-|WARNING: Missing README.
+|{kib-repo}blob/{branch}/src/plugins/management/README.md[management]
+|This plugins contains the "Stack Management" page framework. It offers navigation and an API
+to link individual managment section into it. This plugin does not contain any individual
+management section itself.
 
 
 |{kib-repo}blob/{branch}/src/plugins/maps_legacy/README.md[mapsLegacy]

src/plugins/advanced_settings/README.md

@@ -0,0 +1,5 @@
+# Advanced Settings
+
+This plugin contains the advanced settings management section
+allowing users to configure their advanced settings, also known
+as uiSettings within the code.

src/plugins/management/README.md

@@ -0,0 +1,5 @@
+# Management Plugin
+
+This plugins contains the "Stack Management" page framework. It offers navigation and an API
+to link individual managment section into it. This plugin does not contain any individual
+management section itself.