Update bootstrap-table-cookie.js

Resolve the issue #4598 to prevent select filter lost after refresh browser

src/extensions/cookie/bootstrap-table-cookie.js

@@ -175,7 +175,7 @@ const UtilsCookie = {
             if (cookie.text !== '' && $(element).is('input')) {
               $(element).val(cookie.text)
               cachedFilters[cookie.field] = cookie.text
-            } else if (cookie.text !== '' && $(element).is('select')){
+            } else if (cookie.text !== '' && $(element).is('select')) {
               $(element).append($('<option>', {value: cookie.text, text: cookie.text}))
               $(element).val(cookie.text); cachedFilters[cookie.field] = cookie.text
             }