fix: also revert for Light Modern

Author: joyceerhl

extensions/theme-defaults/themes/light_modern.json

@@ -131,7 +131,7 @@
 		"textCodeBlock.background": "#F8F8F8",
 		"textLink.activeForeground": "#005FB8",
 		"textLink.foreground": "#005FB8",
-		"textPreformat.foreground": "#3B3B3B",
+		"textPreformat.foreground": "#A31515",
 		"textPreformat.background":	"#0000001F",
 		"textSeparator.foreground": "#21262D",
 		"titleBar.activeBackground": "#F8F8F8",