misc: update URLs to non-HTML versions (#1902)

* Update README.md - Fix Broken Link

* misc: update URLs to non-HTML versions

Author: ikrydev

README.md

@@ -19,15 +19,15 @@
 
 Docusaurus is a project for easily building, deploying, and maintaining open source project websites.
 
-- **Simple to Start** Docusaurus is built to be easy to [get up and running](https://docusaurus.io/docs/en/installation.html) in as little time possible. We've built Docusaurus to handle the website build process so you can focus on your project.
-- **Localizable** Docusaurus ships with [localization support](https://docusaurus.io/docs/en/translation.html) via CrowdIn. Empower and grow your international community by translating your documentation.
-- **Customizable** While Docusaurus ships with the key pages and sections you need to get started, including a home page, a docs section, a [blog](https://docusaurus.io/docs/en/blog.html), and additional support pages, it is also [customizable](https://docusaurus.io/docs/en/custom-pages.html) as well to ensure you have a site that is [uniquely yours](https://docusaurus.io/docs/en/api-pages.html).
+- **Simple to Start** Docusaurus is built to be easy to [get up and running](https://docusaurus.io/docs/en/installation/) in as little time possible. We've built Docusaurus to handle the website build process so you can focus on your project.
+- **Localizable** Docusaurus ships with [localization support](https://docusaurus.io/docs/en/translation/) via CrowdIn. Empower and grow your international community by translating your documentation.
+- **Customizable** While Docusaurus ships with the key pages and sections you need to get started, including a home page, a docs section, a [blog](https://docusaurus.io/docs/en/adding-blog/), and additional support pages, it is also [customizable](https://docusaurus.io/docs/en/custom-pages/) as well to ensure you have a site that is [uniquely yours](https://docusaurus.io/docs/en/api-pages/).
 
 ## Installation
 
 Docusaurus is available as the [`docusaurus` package](https://www.npmjs.com/package/docusaurus) on [npm](https://www.npmjs.com).
 
-We have also released the [`docusaurus-init` package](https://www.npmjs.com/package/docusaurus-init) to make [getting started](https://docusaurus.io/docs/en/installation.html) with Docusaurus even easier.
+We have also released the [`docusaurus-init` package](https://www.npmjs.com/package/docusaurus-init) to make [getting started](https://docusaurus.io/docs/en/installation/) with Docusaurus even easier.
 
 ## Contributing