Update libraries/AP_HAL_ChibiOS/hwdef/JFB200/README.md

Co-authored-by: Henry Wurzburg <hwurzburg@yahoo.com>

Author: n-ito2222

libraries/AP_HAL_ChibiOS/hwdef/JFB200/README.md

@@ -120,7 +120,7 @@ The JFB-200 has 10 analog inputs
 - ADC Pin8  -> ADC IN 1 (6.6V)
 - ADC Pin10 -> RSSI voltage monitoring
 - ADC Pin13 -> ADC IN 2 (3.3V)
-- ADC Pin14 -> SERVORAIL sens
+- ADC Pin14 -> SERVORAIL sense
 - ADC Pin15 -> 5V sense
 - ADC Pin16 -> Battery Voltage
 - ADC Pin18 -> Battery Current Sensor