diff --git a/CHANGELOG.md b/CHANGELOG.md
index a90e34672c..1898c7ecab 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,7 +10,7 @@
 * **$build:** exclude dest folder from pageFiles (close: [#654](https://github.com/vuejs/vuepress/issues/654)) ([#655](https://github.com/vuejs/vuepress/issues/655)) ([c1fe692](https://github.com/vuejs/vuepress/commit/c1fe692))
 * **$build:** markdown config should be included in `cache-loader` identifier ([0ad1a45](https://github.com/vuejs/vuepress/commit/0ad1a45))
 * **$markdown:** cannot highlight external python file (`.py`) correctly (close: [#660](https://github.com/vuejs/vuepress/issues/660)) ([2a33075](https://github.com/vuejs/vuepress/commit/2a33075))
-* **$markdown:** missing space between italics and bold (close: [#661](https://github.com/vuejs/vuepress/issues/661)) ([7730ee1](https://github.com/vuejs/vuepress/commit/7730ee1))
+* **$markdown:** missing space between `italics` and `bold` (close: [#661](https://github.com/vuejs/vuepress/issues/661)) ([7730ee1](https://github.com/vuejs/vuepress/commit/7730ee1))
    1. `markdown-it` compiler will intendedly reserve this space between some inline elements, but `preserveWhitespace: false` will remove them. (Ref: [vue-template-compiler#options](https://github.com/vuejs/vue/tree/dev/packages/vue-template-compiler#options))
    2. **Performance Impact**: Size of whole assets of vuepress documentation:
       - Before (1952 kb)
@@ -20,7 +20,7 @@
 
 * **$cli:** debug flag at dev mode ([231da6a](https://github.com/vuejs/vuepress/commit/231da6a))
 * **$default-theme:** transform `Badge` into async component ([de9a51b](https://github.com/vuejs/vuepress/commit/de9a51b))
-* **$default-theme:** **PWA**: themeConfig.serviceWorker.updatePopup option (close: [#453](https://github.com/vuejs/vuepress/issues/453)) ([#533](https://github.com/vuejs/vuepress/issues/533)) ([14dbd1e](https://github.com/vuejs/vuepress/commit/14dbd1e))
+* **$default-theme**(**$pwa**): `themeConfig.serviceWorker.updatePopup` option (close: [#453](https://github.com/vuejs/vuepress/issues/453)) ([#533](https://github.com/vuejs/vuepress/issues/533)) ([14dbd1e](https://github.com/vuejs/vuepress/commit/14dbd1e)) ([@mysticatea](https://github.com/mysticatea))
    ``` js
    module.exports = {
      themeConfig: {