fix language string

Author: schuer

install.php

@@ -3,7 +3,7 @@
 /** @var rex_addon $this */
 
 // add success message after add-on install
-$this->setProperty('successmsg', rex_i18n::rawMsg('demo_base_success_message', '<a href="' . rex_url::backendPage('demo_base') . '">' . $this->i18n('demo_base') . '</a>'));
+$this->setProperty('successmsg', rex_i18n::rawMsg('demo_base_success_message', '<a href="' . rex_url::backendPage('demo_base') . '">' . $this->i18n('demo_base_title') . '</a>'));
 
 // copy backup files
 rex_dir::copy(