【编辑PDF】图片导出要增加支持png和pdf，目前只支持jpg -- 优化

PDF Office/PDF Master/Class/PDFWindowController/ViewController/KMMainViewController+Action.swift

@@ -170,7 +170,7 @@ extension KMMainViewController {
         let exportItem = NSMenuItem(title: NSLocalizedString("Export", comment: ""), action: #selector(menuItemEditingClick_ExportImage), target: self)
         let menu = NSMenu()
         let item1 = menu.insertItem(withTitle: NSLocalizedString("PNG", comment: ""), action:#selector(exportStampImage), target: self, tag:0, at: 0)
-        let item2 = menu.insertItem(withTitle: NSLocalizedString("JPG", comment: ""), action:#selector(exportCorpImage), target: self, tag:1, at: 1)
+        let item2 = menu.insertItem(withTitle: NSLocalizedString("JPG", comment: ""), action:#selector(menuItemEditingClick_ExportImage), target: self, tag:1, at: 1)
         let item3 = menu.insertItem(withTitle: NSLocalizedString("PDF", comment: ""), action:#selector(exportStampImage), target: self, tag:2, at: 2)
         exportItem.submenu = menu
         return exportItem