add missing Header (#43115)

administrator/language/en-GB/guidedtours.joomla_welcome.ini

@@ -1,2 +1,7 @@
+; Joomla! Project
+; (C) 2024 Open Source Matters, Inc. <https://www.joomla.org>
+; License GNU General Public License version 2 or later; see LICENSE.txt
+; Note : All ini files need to be saved as UTF-8
+
 COM_GUIDEDTOURS_TOUR_WELCOMETOJOOMLA_TITLE="Welcome to Joomla!"
 COM_GUIDEDTOURS_TOUR_WELCOMETOJOOMLA_DESCRIPTION="<p>This tour will give you a quick overview of how to get started with Joomla!</p><p>You are in the Joomla Administrator area, also known as the "<strong>Backend</strong>". This is where you set up and manage your entire Joomla Site.</p><p><strong>Want to learn more?</strong></p><p>Let's start the tour and build your site with the power of Joomla!</p>"

administrator/language/en-GB/guidedtours.joomla_welcome_steps.ini

@@ -1,3 +1,8 @@
+; Joomla! Project
+; (C) 2024 Open Source Matters, Inc. <https://www.joomla.org>
+; License GNU General Public License version 2 or later; see LICENSE.txt
+; Note : All ini files need to be saved as UTF-8
+
 COM_GUIDEDTOURS_TOUR_WELCOMETOJOOMLA_STEP_MENUS_TITLE="The Menu"
 COM_GUIDEDTOURS_TOUR_WELCOMETOJOOMLA_STEP_MENUS_DESCRIPTION="<p>The menu provides access to the Administrator management pages. Each section has a collection of pages for managing that particular aspect of Joomla, such as Content, Menus and Users.</p><p>The window pane icons link to individual dashboards for those sections. The System menu itself leads to a dashboard.</p>"