chore: tweaks changelog

CHANGELOG.md

@@ -5,15 +5,16 @@
 ### Bug Fixes
 
 * **$default-theme:** indent-styled code is invisible (close: [#609](https://github.com/vuejs/vuepress/issues/609)) ([fd46a26](https://github.com/vuejs/vuepress/commit/fd46a26))
-* cannot get sidebar when sidebar config contains non-ASCII chars. (close: [#628](https://github.com/vuejs/vuepress/issues/628)) ([8837e7a](https://github.com/vuejs/vuepress/commit/8837e7a))
-* override style issues (close: [#637](https://github.com/vuejs/vuepress/issues/637)) ([#638](https://github.com/vuejs/vuepress/issues/638)) ([f998802](https://github.com/vuejs/vuepress/commit/f998802)), closes [webpack-contrib/mini-css-extract-plugin#130](https://github.com/webpack-contrib/mini-css-extract-plugin/issues/130)
-
+* **$default-theme:** cannot get sidebar when sidebar config contains non-ASCII chars. (close: [#628](https://github.com/vuejs/vuepress/issues/628)) ([8837e7a](https://github.com/vuejs/vuepress/commit/8837e7a))
+* **$core:** override style issues (close: [#637](https://github.com/vuejs/vuepress/issues/637)) ([#638](https://github.com/vuejs/vuepress/issues/638)) ([f998802](https://github.com/vuejs/vuepress/commit/f998802))
+  1. Duplicated generated `override style`.
+  2. Unexpected style order, `override style` should be at the end of the extracted style bundle. (ref: [mini-css-extract-plugin#130](https://github.com/webpack-contrib/mini-css-extract-plugin#130))
 
 ### Features
 
-* page top slot ([f4c1059](https://github.com/vuejs/vuepress/commit/f4c1059))
-* set exitCode to non-zero when catching error (close: [#598](https://github.com/vuejs/vuepress/issues/598) & [#570](https://github.com/vuejs/vuepress/issues/570)) ([#615](https://github.com/vuejs/vuepress/issues/615)) ([0907c7e](https://github.com/vuejs/vuepress/commit/0907c7e))
-* support display header links of all pages (close [#534](https://github.com/vuejs/vuepress/issues/534)) ([#595](https://github.com/vuejs/vuepress/issues/595)) ([36bb6a4](https://github.com/vuejs/vuepress/commit/36bb6a4))
+* **$default-theme:** page top slot ([f4c1059](https://github.com/vuejs/vuepress/commit/f4c1059))
+* **$build:** set exitCode to non-zero when catching error (close: [#598](https://github.com/vuejs/vuepress/issues/598) & [#570](https://github.com/vuejs/vuepress/issues/570)) ([#615](https://github.com/vuejs/vuepress/issues/615)) ([0907c7e](https://github.com/vuejs/vuepress/commit/0907c7e))
+* **$default-theme:** support display header links of all pages (close [#534](https://github.com/vuejs/vuepress/issues/534)) ([#595](https://github.com/vuejs/vuepress/issues/595)) ([36bb6a4](https://github.com/vuejs/vuepress/commit/36bb6a4))