Update docs for system.account (#1944)

docs/examples/rx/03_listen_to_balance_change/index.js

@@ -25,12 +25,12 @@ async function main () {
       if (balance[0] === 'first') {
         // Now we know that if the previous value emitted as balance[0] is `first`,
         // then balance[1] is the initial value of Alice account.
-        console.log(`Alice ${Alice} has a balance of ${balance[1][1].free}`);
+        console.log(`Alice ${Alice} has a balance of ${balance[1].data.free}`);
         console.log('You may leave this example running and start the "Make a transfer" example or transfer any value to Alice address');
         return;
       }
 
-      const change = balance[1][1].free.sub(balance[0][1].free);
+      const change = balance[1].data.free.sub(balance[0].date.free);
 
       // Only display value changes
       if (!change.isZero()) {

docs/examples/rx/05_read_storage/index.js

@@ -36,16 +36,16 @@ function main () {
       })
     )
     // Then we're subscribing to the emitted results
-    .subscribe(([[accountNonce], blockPeriod, validators, validatorBalances]) => {
-      console.log(`accountNonce(${Alice}) ${accountNonce}`);
+    .subscribe(([{ nonce }, blockPeriod, validators, validatorBalances]) => {
+      console.log(`accountNonce(${Alice}) ${nonce}`);
       console.log(`blockPeriod ${blockPeriod.toNumber()} seconds`);
 
       if (validatorBalances) {
         // And lastly we print out the authorityIds and balances of all validators
         console.log('validators', validators.map((authorityId, index) => ({
           address: authorityId.toString(),
-          balance: validatorBalances[index][1].free.toString(),
-          nonce: validatorBalances[index][0].toString()
+          balance: validatorBalances[index].data.free.toString(),
+          nonce: validatorBalances[index].data.toString()
         })));
       }
     });