Update URL to Site Package Builder (#5447)

Author: simonschaufi

Documentation/ExtensionArchitecture/Tutorials/Kickstart/Index.rst

@@ -44,7 +44,7 @@ tutorials for common options:
 
     ..  card:: :ref:`Site package builder <extension-sitepackage-builder>`
 
-        The `Site package builder <https://www.site packagebuilder.com/>`__
+        The `Site Package Builder <https://get.typo3.org/sitepackage>`__
         can be used to conveniently create an extension containing the
         site package (theme) of a site. It can also be used to kickstart
         an arbitrary extension by removing unneeded files.

Documentation/Introduction/Index.rst

@@ -31,7 +31,7 @@ A basic site package
 To get started you need a basic
 `site package <https://docs.typo3.org/permalink/t3coreapi:site-package>`_.
 
-You can use the `official Site Package Builder <https://get.typo3.org.ddev.site/sitepackage>`_
+You can use the official `Site Package Builder <https://get.typo3.org/sitepackage>`_
 to generate one for you or follow the :ref:`site package tutorial <t3sitepackage:start>`.
 
 .. _introduction-getting-help: