Added translation comment tag

Author: yogeshsuhagiya

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

@@ -94,7 +94,7 @@
                         <field id="content_type">N</field>
                     </depends>
                 </field>
-                <field id="ready_time" translate="label" type="text" sortOrder="180" showInDefault="1" showInWebsite="1" showInStore="0" canRestore="1">
+                <field id="ready_time" translate="label comment" type="text" sortOrder="180" showInDefault="1" showInWebsite="1" showInStore="0" canRestore="1">
                     <label>Ready time</label>
                     <comment>Package ready time after order submission (in hours)</comment>
                 </field>