chore: fix typos in comment (#2361)

Author: Mister-Hope

Diff for: packages/@vuepress/core/lib/node/theme-api/index.js

@@ -131,7 +131,7 @@ function resolveSFCs (dirs) {
 /**
  * normalize component name
  *
- * @param {strin} filename
+ * @param {string} filename
  * @returns {string}
  */
 

Diff for: packages/@vuepress/test-utils/lib/createJestRunner.js

@@ -6,7 +6,7 @@ const usedPorts = []
  * Run jest
  *
  * @param {array} jestArgs an array of Jest CLI options
- * @param {array} debug whether start with '--inspect-brk' or not
+ * @param {boolean} debug whether start with '--inspect-brk' or not
  */
 
 module.exports = function createJestRunner (jestArgs, debug) {

Diff for: packages/vuepress/lib/util.js

@@ -10,7 +10,7 @@ const CAC = require('cac')
 /**
  * Bootstrap a CAC cli
  * @param {function} beforeParse
- * @param {function} adterParse
+ * @param {function} afterParse
  * @returns {Promise<void>}
  */