sourcemod/translations/nextmap.phrases.txt

"Phrases"
{
	"Next Map"
	{
		"#format"		"{1:s}"
		"en"			"Next Map: {1}"
	}
	"Changed Next Map"
	{
		"#format"		"{1:s}"
		"en"			"Changed nextmap to \"{1}\"."	
	}
}