[Doc] Add doc link between methods for request filtering

Adds a doc link between QWebEngineUrlRequestInterceptor and
QWebEnginePage

Task-number: QTBUG-54507
Change-Id: Ic9aa535fbf19c7c5ccf279ee660adf180057b56b
Reviewed-by: Viktor Engelmann <viktor.engelmann@qt.io>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>

src/core/api/qwebengineurlrequestinfo.cpp

@@ -99,6 +99,9 @@ ASSERT_ENUMS_MATCH(QtWebEngineCore::WebContentsAdapterClient::OtherNavigation, Q
     You can install the interceptor on a profile via QWebEngineProfile::setRequestInterceptor()
     or QQuickWebEngineProfile::setRequestInterceptor().
 
+    When using the \l{Qt WebEngine Widgets Module}, \l{QWebEnginePage::acceptNavigationRequest()}
+    offers further options to accept or block requests.
+
     \sa interceptRequest(), QWebEngineUrlRequestInfo
 */
 

src/webenginewidgets/doc/src/qwebenginepage_lgpl.qdoc

@@ -325,6 +325,9 @@
     engine process them by overloading this function. This is necessary when an HTML document is
     used as part of the user interface, and not to display external data, for example, when
     displaying a list of results.
+
+    The \l{QWebEngineUrlRequestInterceptor} class offers further options for intercepting and
+    manipulating requests.
 */
 
 /*!