MAGETWO-33443: Password strength validator on installation wizard works in over-exacting mode

- updated message

Author: Olga Kopylova

setup/view/magento/setup/create-admin-account.phtml

@@ -15,7 +15,7 @@ $passwordWizard = sprintf(
         </div>
     <p>%s</p>',
     'Password Strength:',
-    'Must be a mix of at least 7 alpha and numeric characters.(Ex.: BuyIt54).'
+    'Enter 6 or more characters. For a strong password, use a mix of numbers, symbols, and uppercase and lowercase letters (Ex: BuyIt$54).'
 );
 ?>