Update merchants.yml

_data/merchants.yml

@@ -100,6 +100,8 @@
       url: https://xmr.to
 - category: Goods
   merchants:
+    - name: CryptoMercado - coffee and snacks
+      url: https://www.cryptomercado.com/
     - name: Cryptonic Physical Monero & Bitcoin coins
       url: https://cryptonic.net
     - name: Fine Art from Jeanine King ~ Artwork of Home/Archtecture, Pets, Potraits, Caricatures ~ International Shipping