Doc: Update Options > Environment > System screenshot

- Mention "Auto-save files after refactoring" in Opening Files.
- Include the screenshot in Specifying Environment Settings.

Task-number: QTCREATORBUG-26610
Change-Id: I05eaf85244ba1f1acf870bbcd37ba81f616b17a4
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

doc/qtcreator/src/editors/creator-only/creator-clang-codemodel.qdoc

@@ -157,14 +157,6 @@
     re-scanning is incremental, so nothing is lost by closing and re-starting
     \QC.
 
-    Because clangd considers only the on-disk state of included header files
-    when parsing a source file, you need to save changes in header files to
-    have them considered elsewhere for completion, diagnostics, and so on.
-    Partly for this reason, files that are changed by refactoring actions are
-    saved automatically. To disable this feature, select \uicontrol Tools >
-    \uicontrol Options > \uicontrol Environment > \uicontrol System >
-    \uicontrol {Auto-save files after refactoring}.
-
     The document outline in the \l{Viewing Defined Types and Symbols}
     {Outline} view is backed by clangd's document symbol support, which
     makes the results more reliable than before.

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

@@ -45,6 +45,8 @@
     \uicontrol Environment > \uicontrol System, and then select
     \uicontrol Change in the \uicontrol Environment field.
 
+    \image qtcreator-options-environment-system.png "Environment options System tab"
+
     In addition, you can specify custom environment variables in the
     \uicontrol {Project Settings} > \uicontrol Environment settings.
     They are added to all build environments. The final build environment

doc/qtcreator/src/user-interface/creator-open-documents-view.qdoc

@@ -63,6 +63,8 @@
         \li Select the \uicontrol {Auto-save modified files} check box to
             automatically save changed files at the intervals specified in
             the \uicontrol Interval field.
+        \li Select the \uicontrol {Auto-save files after refactoring} check
+            box to automatically save \l{Refactoring}{refactored files}.
         \li Select the \uicontrol {Auto-suspend unmodified files} check
             box to automatically free the resources of open files after
             prolonged inactivity. The files are still listed in the