Update NGN limits (#187)

Author: jeffyanta

pkg/code/limit/limits.go

@@ -133,7 +133,7 @@ var (
 		"myr": {PerTransaction: 500.00, Daily: 4_000.00},
 		"mzn": {PerTransaction: 15_000.00, Daily: 60_000.00},
 		"nad": {PerTransaction: 2_500.00, Daily: 15_000.00},
-		"ngn": {PerTransaction: 100_000.00, Daily: 400_000.00},
+		"ngn": {PerTransaction: 400_000.00, Daily: 1_600_000.00},
 		"nio": {PerTransaction: 5_000.00, Daily: 35_000.00},
 		"nok": {PerTransaction: 2500.00, Daily: 9000.00},
 		"npr": {PerTransaction: 25_000.00, Daily: 125_000.00},
@@ -300,7 +300,7 @@ var (
 		"myr": {Min: 0.10, Max: 2.00},
 		"mzn": {Min: 3.00, Max: 60.00},
 		"nad": {Min: 0.50, Max: 10.00},
-		"ngn": {Min: 20.00, Max: 400.00},
+		"ngn": {Min: 80.00, Max: 1_600.00},
 		"nio": {Min: 1.00, Max: 20.00},
 		"nok": {Min: 0.50, Max: 10.00},
 		"npr": {Min: 5.00, Max: 100.00},