replace btc with sats for lightning wallets

screen/lnd/scanLndInvoice.js

@@ -232,10 +232,10 @@ export default class ScanLndInvoice extends React.Component {
           >
             <Text style={{ color: '#0c2550', fontSize: 14 }}>{this.state.fromWallet.getLabel()}</Text>
             <Text style={{ color: '#0c2550', fontSize: 14, fontWeight: '600', marginLeft: 8, marginRight: 4 }}>
-              {loc.formatBalanceWithoutSuffix(this.state.fromWallet.getBalance(), BitcoinUnit.BTC, false)}
+              {loc.formatBalanceWithoutSuffix(this.state.fromWallet.getBalance(), BitcoinUnit.SATS, false)}
             </Text>
             <Text style={{ color: '#0c2550', fontSize: 11, fontWeight: '600', textAlignVertical: 'bottom', marginTop: 2 }}>
-              {BitcoinUnit.BTC}
+              {BitcoinUnit.SATS}
             </Text>
           </TouchableOpacity>
         </View>