Merge pull request #2904 from naisanza/bugs/typos

icingaweb2/setup typo on page

modules/setup/application/forms/LdapDiscoveryPage.php

@@ -31,7 +31,7 @@ class LdapDiscoveryPage extends Form
         $this->setTitle($this->translate('LDAP Discovery', 'setup.page.title'));
         $this->addDescription($this->translate(
             'You can use this page to discover LDAP or ActiveDirectory servers ' .
-            ' for authentication. If you don\' want to execute a discovery, just skip this step.'
+            ' for authentication. If you don\'t want to execute a discovery, just skip this step.'
         ));
     }