update license id row

Author: paigecalvert

docs/vendor/licenses-using-builtin-fields.mdx

@@ -54,7 +54,7 @@ The table below describes the general built-in license fields:
       <td>The custom ID for the customer.</td>
     </tr>
     <tr>
-      <td>`customer_id`, `licenseID`</td>
+      <td>`customer_id`, `licenseID`, `licenseId`</td>
       <td>Unique customer identifier. This value never changes.</td>
     </tr>
     <tr>