Update firmware model name

src/App/AppDef.h

@@ -102,7 +102,7 @@ enum AgFirmwareMode {
   FW_MODE_O_1PS,  /** PMS5003T, S8 */
   FW_MODE_O_1P,   /** PMS5003T */
   FW_MODE_I_42PS, /** DIY_PRO 4.2 */
-  FW_MODE_I_37PS, /** DIY_PRO 3.7 */
+  FW_MODE_I_33PS, /** DIY_PRO 3.3 */
   FW_MODE_I_BASIC_40PS, /** DIY_BASIC 4.0 */
 };
 const char *AgFirmwareModeName(AgFirmwareMode mode);