Update the OTP-REG.mib file download location

test/core_app.mk

@@ -877,7 +877,7 @@ core-app-mib: build clean
 	$i "Download .mib files from Erlang/OTP"
 	$t mkdir $(APP)/mibs/
 	$t curl -s -o $(APP)/mibs/EX1-MIB.mib $(OTP_MASTER)/lib/snmp/examples/ex1/EX1-MIB.mib
-	$t curl -s -o $(APP)/mibs/OTP-REG.mib $(OTP_MASTER)/lib/otp_mibs/mibs/OTP-REG.mib
+	$t curl -s -o $(APP)/mibs/OTP-REG.mib $(OTP_MASTER)/lib/snmp/mibs/OTP-REG.mib
 
 	$i "Generate .erl files dependent from headers generated by .mib files"
 	$t printf "%s\n" "-module(use_v1)." "-include(\"EX1-MIB.hrl\")." > $(APP)/src/use_v1.erl