Update bootstrap-table-cookie.js

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

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

@@ -178,7 +178,7 @@ const UtilsCookie = {
             } 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
+              cachedFilters[cookie.field] = cookie.text
             }
           })
         }