Slight improvements to wxWebView::EnableContextMenu() documentation.

Explain that the menu is enabled by default so the main use of this method is
to disable it.

Also add "@since" tags for the new methods.

And mention this in the changelog.

See #14789.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73327 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -563,6 +563,7 @@ All (GUI):
 - Add support for searching in wxWebView for MSW and GTK (Allonii).
 - Add generic wxFileSystem support to wxWebView with 
   wxWebViewFSHandler (Nick Matthews).
+- Add possibility to disable context menu in wxWebView.
 - Add possibility to hide and show again wxRibbonBar pages (wxBen).
 - Add wxRibbonBar pages highlighting (wxBen).
 - Add expand/collapse button to wxRibbonBar (rakeshthp).

interface/wx/webview.h

@@ -492,12 +492,19 @@ public:
     */
 
     /**
-        Enable or disbale the right click context menu.
+        Enable or disable the right click context menu.
+
+        By default the standard context menu is enabled, this method can be
+        used to disable it or re-enable it later.
+
+        @since 2.9.5
     */
     virtual void EnableContextMenu(bool enable = true);
 
    /**
         Returns @true if a context menu will be shown on right click.
+
+        @since 2.9.5
     */
     virtual bool IsContextMenuEnabled() const;