Added comment in One Touch Ordering configuration

Author: mpietrzyk-creatuity

app/code/Magento/OneTouchOrdering/etc/adminhtml/system.xml

@@ -13,6 +13,7 @@
                 <field id="active" translate="label" type="select" sortOrder="1" showInDefault="1" showInWebsite="1" showInStore="1" canRestore="1">
                     <label>Enabled</label>
                     <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
+                    <comment>Please enable Braintree with Vault and CC for this to work</comment>
                 </field>
                 <field id="button_text" translate="label" type="text" sortOrder="1" showInDefault="1" showInWebsite="1" showInStore="1" canRestore="1">
                     <label>Button Text</label>