fix(typo): accross -> across

Fixes #111

app/components/LndSyncing/LndSyncing.js

@@ -17,7 +17,7 @@ class LndSyncing extends Component {
         },
         {
           title: 'HTLC',
-          description: 'Hashed TimeLock Contracts is a class of payments that use hashlocks and timelocks to require the receiver of a payment either acknowledge receiving the payment before a deadline or forfeit the ability to claim the payment. HTLCs are useful within the Lightning Network for routing payments accross two or more payment channels' // eslint-disable-line
+          description: 'Hashed TimeLock Contracts is a class of payments that use hashlocks and timelocks to require the receiver of a payment either acknowledge receiving the payment before a deadline or forfeit the ability to claim the payment. HTLCs are useful within the Lightning Network for routing payments across two or more payment channels' // eslint-disable-line
         },
         {
           title: 'Onion Routing',