example fix (#822)

Author: nidhi-singh02

pages/price-feeds/create-tradingview-charts.mdx

@@ -145,5 +145,5 @@ The datafeed URL is [here](https://benchmarks.pyth.network/v1/shims/tradingview)
 - History: https://benchmarks.pyth.network/v1/shims/tradingview/history?symbol=Crypto.ETH/USD&resolution=1&from=1690338541&to=1690338741
 - Stream of prices: https://benchmarks.pyth.network/v1/shims/tradingview/streaming
 - Config: https://benchmarks.pyth.network/v1/shims/tradingview/config
-- Symbols: https://benchmarks.pyth.network/v1/shims/tradingview/symbols?symbol=crypto.btc/usd
+- Symbols: https://benchmarks.pyth.network/v1/shims/tradingview/symbols?symbol=Crypto.BTC/USD
 - Search: https://benchmarks.pyth.network/v1/shims/tradingview/search?query=bitcoin