fixed test

Author: Mrart

docs/content/docs/connectors/flink-sources/mysql-cdc.md

@@ -1130,6 +1130,8 @@ Data Type Mapping
         TEXT<br>
         MEDIUMTEXT<br>
         LONGTEXT<br>
+        LONG<br>
+        LONG VARCHAR<br>
       </td>
       <td>STRING</td>
       <td></td>