Doc: Re-phrase descriptions around read-only properties

The current text sounds a bit like it's describing a const value.

Change-Id: Idf9b8ae14ce032af7ac073419aba6250b26f5847
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
(cherry picked from commit db04cfb2d00c68e7c63bd183c118ecd77f0e4e68)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 6 insertions, 6 deletions

diff --git a/src/qml/doc/src/qmllanguageref/syntax/objectattributes.qdoc b/src/qml/doc/src/qmllanguageref/syntax/objectattributes.qdoc
index 60e90217f4..d442b4f8de 100644
--- a/src/qml/doc/src/qmllanguageref/syntax/objectattributes.qdoc
+++ b/src/qml/doc/src/qmllanguageref/syntax/objectattributes.qdoc
@@ -1,4 +1,4 @@
-// Copyright (C) 2017 The Qt Company Ltd.
+// Copyright (C) 2023 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
 
 /*!
@@ -671,12 +671,12 @@ An object declaration may define a read-only property using the \c readonly
 keyword, with the following syntax:
 
 \code
-    readonly property <propertyType> <propertyName> : <initialValue>
+    readonly property <propertyType> <propertyName> : <value>
 \endcode
 
-Read-only properties must be assigned a value on initialization. After a
-read-only property is initialized, it no longer possible to give it a value,
-whether from imperative code or otherwise.
+Read-only properties must be assigned a static value or a binding expression on
+initialization. After a read-only property is initialized, you cannot change
+its static value or binding expression anymore.
 
 For example, the code in the \c Component.onCompleted block below is invalid:
 
@@ -684,7 +684,7 @@ For example, the code in the \c Component.onCompleted block below is invalid:
 Item {
     readonly property int someNumber: 10
 
-    Component.onCompleted: someNumber = 20  // doesn't work, causes an error
+    Component.onCompleted: someNumber = 20  // TypeError: Cannot assign to read-only property
 }
 \endqml