Unnecessary escape characters in cookie.js

Removed unnecessary escape characters from regex in "getCookie function in cookie.js" - 
. ( ) [ / +
The above characters don't need escaping.

Author: NNboru

6-data-storage/01-cookie/cookie.js

@@ -1,6 +1,6 @@
 function getCookie(name) {
   let matches = document.cookie.match(new RegExp(
-    "(?:^|; )" + name.replace(/([\.$?*|{}\(\)\[\]\\\/\+^])/g, '\\$1') + "=([^;]*)"
+    "(?:^|; )" + name.replace(/([.$?*|{}()[\]\\/+^])/g, '\\$1') + "=([^;]*)"
   ));
   return matches ? decodeURIComponent(matches[1]) : undefined;
 }