Heltec Capsule Sensor V3 information update

Author: Heltec-Aaron-Lee

boards.txt

@@ -22253,7 +22253,7 @@ heltec_capsule_sensor_V3.build.bootloader_addr=0x0
 heltec_capsule_sensor_V3.build.target=esp32s3
 heltec_capsule_sensor_V3.build.mcu=esp32s3
 heltec_capsule_sensor_V3.build.core=esp32
-heltec_capsule_sensor_V3.build.variant=heltec_capsule_sensor_V3
+heltec_capsule_sensor_V3.build.variant=heltec_capsule_sensor_v3
 heltec_capsule_sensor_V3.build.board=HELTEC_CAPSULE_SENSOR_V3
 
 heltec_capsule_sensor_V3.build.usb_mode=1