fix: fix config reload cache busting

Author: yyx990803

lib/util/loadConfig.js

@@ -3,7 +3,7 @@ const path = require('path')
 const yamlParser = require('js-yaml')
 const tomlParser = require('toml')
 
-module.exports = function loadConfig (vuepressDir, bustCache = false) {
+module.exports = function loadConfig (vuepressDir, bustCache = true) {
   const configPath = path.resolve(vuepressDir, 'config.js')
   const configYmlPath = path.resolve(vuepressDir, 'config.yml')
   const configTomlPath = path.resolve(vuepressDir, 'config.toml')