Updating the changed labels from CoinMarketCap data.

[LEGEND2310]

In the load_data function from lines 79 to 83 the label values for each have been changed in the CoinMarketCap data to the following:

• percent_change_1h to percentChange1h
• percent_change_24h to percentChange24h
• percent_change_7d to percentChange7d
• market_cap to marketCap
• volume_24h to volume24h

Also in line 109 made the code into a single line to avoid confusion.