Add missing module dependency to the USBtoSerial project. Minor documentation corrections.

Projects/SerialToLCD/SerialToLCD.txt

@@ -94,4 +94,16 @@
  *    <td>/E</td>
  *   </tr>
  *  </table>
+ *
+ *  \section Sec_Options Project Options
+ *
+ *  The following defines can be found in this project, which can control the project behaviour when defined, or changed in value.
+ *
+ *  <table>
+ *   <tr>
+ *    <td>
+ *     None
+ *    </td>
+ *   </tr>
+ *  </table>
  */