Doc: Describe filtering search results for symbol usage

- Use the current name for the menu item in change log:
  Find References to Symbol Under Cursor
- Update screenshots

Task-number: QTCREATORBUG-25162
Change-Id: I3c46561c91c01f2d33039cb4431cd6b88d163e68
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

dist/changes-4.15.0.md

@@ -36,7 +36,8 @@ Editing
 * Added `Create Getter and Setter Member Functions` refactoring action
   (QTCREATORBUG-1532)
 * Added `Generate Constructor` refactoring action
-* Added filtering of `Find Usages` based on access type (QTCREATORBUG-19373)
+* Added filtering of `Find References to Symbol Under Cursor` based on access
+  type (QTCREATORBUG-19373)
 * Added `Open in Editor` and `Open Type Hierarchy` to context menu on items in
   type hierarchy
 * Added highlighting of previous class when navigating in type hierarchy

doc/qtcreator/src/editors/creator-code-refactoring.qdoc

@@ -51,6 +51,8 @@
     \uicontrol {C++} > \uicontrol {Find References to Symbol Under Cursor} or
     press \key {Ctrl+Shift+U}.
 
+    \image qtcreator-find-references-to-symbol-under-cursor.png "Search results for finding references to symbols"
+
     \note You can also select \uicontrol Edit > \uicontrol {Find/Replace} >
     \uicontrol {Advanced Find} > \uicontrol {C++ Symbols} to search for
     classes, functions, enums, and declarations either from files listed as
@@ -100,6 +102,10 @@
         \li To expand and collapse the list of all instances, click the
             \inlineimage qtcreator-expand.png
             (\uicontrol {Expand All}) button.
+        \li To filter the search results for the usage of symbols according to
+            access type, such as read, write, or declaration, click the
+            \inlineimage filtericon.png
+            (\uicontrol {Filter Tree}) button and select the access type.
         \li To clear the search results, click the
             \inlineimage clean_pane_small.png
             (\uicontrol Clear) button.