fix value (see #1644)

src/core/bg/config.js

@@ -45,7 +45,7 @@ const CLIPBOARD_API_SUPPORTED = IS_NOT_SAFARI;
 const NATIVE_API_API_SUPPORTED = IS_NOT_SAFARI;
 const WEB_BLOCKING_API_SUPPORTED = IS_NOT_SAFARI;
 const SHARE_API_SUPPORTED = navigator.canShare && navigator.canShare({ files: [new File([new Blob([""], { type: "text/html" })], "test.html")] });
-const LEGACY_FILENAME_REPLACED_CHARACTERS = ["~", "+", "\\\\\\\\", "?", "%", "*", ":", "|", "\"", "<", ">", "\u0000-\u001f", "\u007f"];
+const LEGACY_FILENAME_REPLACED_CHARACTERS = ["~", "+", "\\\\", "?", "%", "*", ":", "|", "\"", "<", ">", "\u0000-\u001f", "\u007f"];
 const DEFAULT_FILENAME_REPLACED_CHARACTERS = ["~", "+", "?", "%", "*", ":", "|", "\"", "<", ">", "\\\\", "\x00-\x1f", "\x7F"];
 const DEFAULT_FILENAME_REPLACEMENT_CHARACTERS = ["～", "＋", "？", "％", "＊", "：", "｜", "＂", "＜", "＞", "＼"];