chore: update HTTP -> HTTPS (#11723)

Author: him2him2

README.md

@@ -254,7 +254,7 @@ Vue (pronounced `/vjuː/`, like view) is a **progressive framework** for buildin
 
 #### Browser Compatibility
 
-Vue.js supports all browsers that are [ES5-compliant](http://kangax.github.io/compat-table/es5/) (IE8 and below are not supported).
+Vue.js supports all browsers that are [ES5-compliant](https://kangax.github.io/compat-table/es5/) (IE8 and below are not supported).
 
 ## Ecosystem
 
@@ -302,7 +302,7 @@ To check out [live examples](https://vuejs.org/v2/examples/) and docs, visit [vu
 
 ## Questions
 
-For questions and support please use [the official forum](http://forum.vuejs.org) or [community chat](https://chat.vuejs.org/). The issue list of this repo is **exclusively** for bug reports and feature requests.
+For questions and support please use [the official forum](https://forum.vuejs.org) or [community chat](https://chat.vuejs.org/). The issue list of this repo is **exclusively** for bug reports and feature requests.
 
 ## Issues
 
@@ -329,6 +329,6 @@ Thank you to all the people who already contributed to Vue!
 
 ## License
 
-[MIT](http://opensource.org/licenses/MIT)
+[MIT](https://opensource.org/licenses/MIT)
 
 Copyright (c) 2013-present, Yuxi (Evan) You