Update market-hours.mdx (#684)

Adding market hours and liquidity guide and exception for USDBRL, USDCOP, USDCLP and USDPEN to be in line with local market hours.

Author: benpyth

pages/price-feeds/market-hours.mdx

@@ -8,7 +8,7 @@ Pyth price feeds follow the [traditional market hours](https://www.cmegroup.com/
 | EU Equities | Paris, Amsterdam, Ireland: Every weekday from 9AM CET to 5.30PM CET | Markets are closed on weekends, and follow [Euronext Holidays & Trading Hours](https://live.euronext.com/en/resources/trading-hours-holidays) |
 | UK Equities | Every weekday from 8AM UK time to 4.30PM UK time | Markets are closed on weekends, and follow [LSE Holidays & Trading Hours](https://www.londonstockexchange.com/equities-trading/business-days) |
 | FX | From Sunday 5PM ET to Friday 5PM ET | Trading continues during most US holidays |
-| Emerging Markets FX | From Sunday 6PM ET to Friday 5PM ET | Spot EM FX liquidity can be significantly limited at the start of the trading week, outside local market trading hours, and during local holidays, which can lead to wider confidence intervals. Pyth EM FX currencies: INR, IDR, PHP, KRW, TWD, CNH, TRY, ZAR, MXN, BRL, COP, CLP, PEN |
+| Emerging Markets FX | From Sunday 6PM ET to Friday 5PM ET.  For USDBRL, USDCOP, USDCLP and USDPEN, please refer to the [EM FX Market Hours Guide](https://pyth-network.notion.site/EM-FX-Market-Hours-Guide-1de2eecaaac980eea5eddf8f34398309) | Spot EM FX liquidity can be significantly limited at the start of the trading week, outside local market trading hours, and during local holidays, which can lead to wider confidence intervals. Pyth EM FX currencies: INR, IDR, PHP, KRW, TWD, CNH, TRY, ZAR, MXN, BRL, COP, CLP, PEN |
 | Metals | From Sunday 6PM ET to Friday 5PM ET | Daily maintenance window applies from 5PM ET to 6PM ET, Monday to Thursday. Spot gold and silver trading also follow [CME holiday closures](https://www.cmegroup.com/tools-information/holiday-calendar.html)|
 | Rates | Every weekday from 8AM ET to 5PM ET | Markets are closed on weekends, and follow [NYSE Holidays & Trading Hours](https://www.nyse.com/markets/hours-calendars) |
 | Reference Rates | 24/7 | Follow [Federal Reserve Bank of New York Holidays](https://www.newyorkfed.org/aboutthefed/holiday_schedule.html) |