fix:tag写错了

components/multimedia/luat_lib_multimedia.c

@@ -5,7 +5,7 @@
 @version 1.0
 @date    2022.03.11
 @demo multimedia
-@demo LUAT_USE_MEDIA
+@tag LUAT_USE_MEDIA
 */
 #include "luat_base.h"
 #include "luat_multimedia.h"

components/usbapp/luat_lib_usbapp.c

@@ -4,7 +4,7 @@
 @version 1.0
 @date    2022.01.17
 @demo usb_hid
-@demo LUAT_USE_USB
+@tag LUAT_USE_USB
 */
 #include "luat_base.h"
 #include "luat_msgbus.h"