【fix】【AI】AppStore-免费版，暗黑模式下，打开AI弹窗，文案看不清

PDF Office/PDF Master/Class/AIInfo/AIUserInfoController/AIUserInfoController.swift

@@ -200,7 +200,8 @@ import Cocoa
         self.validCreditLabel.font = NSFont.UbuntuBoldFontWithSize(32)
         self.validCreditLabel.textColor = .blue
         self.remainLabel.font = NSFont.UbuntuBoldFontWithSize(20)
-        self.remainLabel.textColor = .black
+//        self.remainLabel.textColor = .black
+        self.remainLabel.textColor = KMAppearance.KMColor_Layout_H0()
 
         self.creditsRestoreBtn.font = NSFont.SFProTextRegularFont(14)
         self.creditsBuyNowBox.fillColor = NSColor.clear