Updated system.xml label

Author: ihorvansach

etc/adminhtml/system.xml

@@ -352,7 +352,7 @@ To create a new secret, navigate in the
                     <label>Purchase</label>
                     <field id="tax_enabled" translate="label comment" type="select" sortOrder="10" showInDefault="1" showInWebsite="1" showInStore="1" canRestore="1">
                         <label>Include Tax</label>
-                        <comment>If enabled, tax will be sent to Google Tag Manager.</comment>
+                        <comment>If enabled, tax will be sent to Google Tag Manager and GA4.</comment>
                         <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
                     </field>
                 </group>