Doc: Describe the option for hiding unconfigured kits

Task-number: QTCREATORBUG-30604
Change-Id: Ia36c9734937cb7de4e07b417ef36dee178f24f3c
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

dist/changelog/changes-14.0.0.md

@@ -131,8 +131,8 @@ Editing
 Projects
 --------
 
-* Added the option to hide all unconfigured kits from the list in `Projects`
-  mode
+* Added the `Hide Inactive Kits`/`Show All Kits` button to hide inactive kits
+  from the list in the `Projects` mode
 * Added support for user comments in the environment editor
 * Fixed the parsing of file links when color was used for the output
   ([QTCREATORBUG-30774](https://bugreports.qt.io/browse/QTCREATORBUG-30774))

doc/qtcreator/src/projects/creator-only/creator-projects-settings-overview.qdoc

@@ -127,6 +127,9 @@
     is not suitable for the project type. To view the warning and error messages,
     move the mouse pointer over the kit name.
 
+    To hide inactive kits from the list, select \uicontrol {Hide Inactive Kits}.
+    To show them again, select \uicontrol {Show All Kits}.
+
     \section1 Manage kits
 
     To modify kit configuration or to \l{Add kits}{add kits} to the list or to