[TASK] Correct wrong reference `$packageRenderer` to `$pageRender

Releases: main, 12.4
Resolves: #101284
Change-Id: Idd633c9d764296c9ec2dfb482a75d59a9da3e2d4
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/79860


Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Benni Mack <benni@typo3.org>

typo3/sysext/core/Documentation/Changelog/12.0/Feature-96510-InfrastructureForJavaScriptModulesAndImportmaps.rst

@@ -97,10 +97,10 @@ A module can be added to the current page response either via
 ..  code-block:: php
 
     // via PageRenderer
-    $this->packageRenderer->loadJavaScriptModule('@vendor/my-extension/example.js');
+    $this->pageRenderer->loadJavaScriptModule('@vendor/my-extension/example.js');
 
     // via JavaScriptRenderer
-    $this->packageRenderer->getJavaScriptRenderer()->addJavaScriptModuleInstruction(
+    $this->pageRenderer->getJavaScriptRenderer()->addJavaScriptModuleInstruction(
         JavaScriptModuleInstruction::create('@vendor/my-extension/example.js')
     );