Makefile: Update params download URL.

Makefile

@@ -2,8 +2,7 @@
 
 PREFIX = /usr/local
 CONFDIR = $(HOME)/.config/darkfi
-#DLURL = https://testnet.cashier.dark.fi
-DLURL = http://185.165.171.77
+DLURL = https://testnet.cashier.dark.fi
 
 CARGO = cargo
 DLTOOL = wget -q -O-