[4.0] Improve updater language strings (#35774)

Author: bembelimen

administrator/language/en-GB/com_joomlaupdate.ini

@@ -59,7 +59,7 @@ COM_JOOMLAUPDATE_SELF_EMPTYSTATE_TITLE="A new version of the Joomla Update Compo
 COM_JOOMLAUPDATE_SYSTEM_CHECK="System Check"
 COM_JOOMLAUPDATE_TOOLBAR_CHECK="Check for Updates"
 COM_JOOMLAUPDATE_UPDATE_CHECK="Update Check"
-COM_JOOMLAUPDATE_UPDATE_CONFIRM_BACKUP="I've created a backup and my extensions are compatible."
+COM_JOOMLAUPDATE_UPDATE_CONFIRM_BACKUP="I'm prepared for the update and have made a backup."
 COM_JOOMLAUPDATE_UPDATE_EMPTYSTATE_TITLE="Update your site to \"Joomla! %s\""
 COM_JOOMLAUPDATE_UPDATE_EMPTYSTATE_BUTTON_ADD="Start update"
 COM_JOOMLAUPDATE_UPDATE_LOG_CLEANUP="Cleaning up after installation."
@@ -125,7 +125,7 @@ COM_JOOMLAUPDATE_VIEW_DEFAULT_NO_DOWNLOAD_URL_DESC="An update to Joomla %1$s was
 COM_JOOMLAUPDATE_VIEW_DEFAULT_NO_LIVE_UPDATE="A new version of the Joomla Update Component is available."
 COM_JOOMLAUPDATE_VIEW_DEFAULT_NO_LIVE_UPDATE_DESC="You must update this component first before you can update Joomla! <a class=\"alert-link\" href=\"index.php?option=com_installer&view=update\">Click here to update the component</a>."
 COM_JOOMLAUPDATE_VIEW_DEFAULT_NON_CORE_PLUGIN_BEING_CHECKED="The system is currently checking these plugins to see if they could cause problems during the update.<br><br>Please be patient while the checks are completed."
-COM_JOOMLAUPDATE_VIEW_DEFAULT_NON_CORE_PLUGIN_CONFIRMATION="I accept the warnings about potentially incompatible extensions and wish to proceed with the update."
+COM_JOOMLAUPDATE_VIEW_DEFAULT_NON_CORE_PLUGIN_CONFIRMATION="Acknowledge the warnings about potentially incompatible extensions and proceed with the update."
 COM_JOOMLAUPDATE_VIEW_DEFAULT_NOUPDATES="No updates available"
 COM_JOOMLAUPDATE_VIEW_DEFAULT_NOUPDATESNOTICE="You already have the latest Joomla version, %s."
 COM_JOOMLAUPDATE_VIEW_DEFAULT_PACKAGE="Update package URL"