renamed gas label, fixed hash demonstrating bug

frontend/pages/stream/[entryId].js

@@ -88,7 +88,7 @@ const Entry = () => {
             fontSize="1.5rem"
             textAlign="left"
           >
-            {entry && entry.hash}
+            {entry && entry.tx.hash}
           </Heading>
         </HStack>
       </Skeleton>

frontend/src/components/TxInfo.js

@@ -64,7 +64,7 @@ const TxInfo = (props) => {
         <Stat>
           <StatLabel>Gas</StatLabel>
           <StatNumber>{transaction.tx.gas}</StatNumber>
-          <StatHelpText>gas limit for transaction</StatHelpText>
+          <StatHelpText>gas unit used for transaction</StatHelpText>
         </Stat>
         <Stat>
           <StatLabel>Gas price</StatLabel>