Update README.md

README.md

@@ -684,7 +684,7 @@ The following parameters are available:
 | battery_discharge_lim | Discharging voltage limit in mV<br>for battery level estimation         | `3200` |
 | battery_charge_lim    | Charging voltage limit in mV<br>for battery level estimation            | `4200` |
 | powerfeather/         | PowerFeather specific (see [https://docs.powerfeather.dev](https://docs.powerfeather.dev)) |   |
-| &nbsp;&nbsp;battery_capacity      | Battery capacity in mAh<br>(`0`: no battery connected) | `0`    |
+| &nbsp;&nbsp;battery_capacity      | Battery capacity in mAh<br>(`0`: no battery connected)<br>see [PowerFeather Docs: `init()`](https://docs.powerfeather.dev/sdk/api/mainboard#result-inituint16_t-capacity--0-batterytype-type--batterytypegeneric_3v7) | `0`    |
 | &nbsp;&nbsp;supply_maintain_voltage | see [PowerFeather Docs: `setSupplyMaintainVoltage()`](https://docs.powerfeather.dev/sdk/api/mainboard#result-setsupplymaintainvoltageuint16_t-voltage) | `5500` |
 | &nbsp;&nbsp;temperature_measurement | see [PowerFeather Docs: `enableBatteryTempSense()`](https://docs.powerfeather.dev/sdk/api/mainboard#result-enablebatterytempsensebool-enable) | `true` |
 | &nbsp;&nbsp;battery_fuel_gauge      | see [PowerFeather Docs: `enableBatteryFuelGauge()`](https://docs.powerfeather.dev/sdk/api/mainboard#result-enablebatteryfuelgaugebool-enable) | `true` |