fix date format in README

Author: Sergey Danilchenko

README.md

@@ -47,7 +47,7 @@ Here is the complete list of the currently implemented services:
 | [Abstract](https://www.abstractapi.com) | * | * | Yes |
 | [coinlayer](https://coinlayer.com) | * Crypto (Limited standard currencies) | * Crypto (Limited standard currencies) | Yes |
 | [European Central Bank](https://www.ecb.europa.eu/home/html/index.en.html) | EUR | * | Yes |
-| [National Bank of the Republic of Belarus](https://www.nbrb.by) | * | BYN (from 01-07-2016),<br>BYR (01-01-2000 - 30.06.2016),<br>BYB (25-05-1992 - 31-12-1999) | Yes |
+| [National Bank of the Republic of Belarus](https://www.nbrb.by) | * | BYN (from 01-07-2016),<br>BYR (01-01-2000 - 30-06-2016),<br>BYB (25-05-1992 - 31-12-1999) | Yes |
 | [National Bank of Romania](http://www.bnr.ro) | RON, AED, AUD, BGN, BRL, CAD, CHF, CNY, CZK, DKK, EGP, EUR, GBP, HRK, HUF, INR, JPY, KRW, MDL, MXN, NOK, NZD, PLN, RSD, RUB, SEK, TRY, UAH, USD, XAU, XDR, ZAR | RON, AED, AUD, BGN, BRL, CAD, CHF, CNY, CZK, DKK, EGP, EUR, GBP, HRK, HUF, INR, JPY, KRW, MDL, MXN, NOK, NZD, PLN, RSD, RUB, SEK, TRY, UAH, USD, XAU, XDR, ZAR | Yes |
 | [Central Bank of the Republic of Turkey](http://www.tcmb.gov.tr) | * | TRY | Yes |
 | [Central Bank of the Republic of Uzbekistan](https://cbu.uz) | * | UZS | Yes |