Use NAME instead of PRETTY_NAME

Author: HomuHomu833

source/funkin/backend/system/framerate/SystemInfo.hx

@@ -29,7 +29,7 @@ class SystemInfo extends FramerateCategory {
 			var osName = "";
 			var osVersion = "";
 			for (line in process.stdout.readAll().toString().split("\n")) {
-				if (line.startsWith("PRETTY_NAME=")) {
+				if (line.startsWith("NAME=")) {
 					var index = line.indexOf('"');
 					if (index != -1)
 						osName = line.substring(index + 1, line.lastIndexOf('"'));
@@ -178,4 +178,4 @@ class SystemInfo extends FramerateCategory {
 		this.text.text = _text;
 		super.__enterFrame(t);
 	}
-}
+}