Update links on README.md

Author: coliff

README.md

@@ -26,7 +26,7 @@
 </p>
 
 <p align="center">
-  <a href="#getting-started">How To Use</a> • <a href="/CONTRIBUTING.md">Contributing</a> • <a href="http://roadmap.htmlhint.io/">Roadmap</a> • <a href="https://htmlhint.io">Website</a>
+  <a href="#getting-started">How To Use</a> • <a href="/CONTRIBUTING.md">Contributing</a> • <a href="http://roadmap.htmlhint.io/">Roadmap</a> • <a href="https://htmlhint.com">Website</a>
 </p>
 
 ## Table of Contents
@@ -38,7 +38,7 @@
 ## Getting Started
 This plugin requires Grunt `~0.4.1`
 
-If you haven't used [Grunt](http://gruntjs.com/) before, be sure to check out the [Getting Started](http://gruntjs.com/getting-started) guide, as it explains how to create a [Gruntfile](http://gruntjs.com/sample-gruntfile) as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command:
+If you haven't used [Grunt](https://gruntjs.com/) before, be sure to check out the [Getting Started](https://gruntjs.com/getting-started) guide, as it explains how to create a [Gruntfile](https://gruntjs.com/sample-gruntfile) as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command:
 
 ```shell
 npm install grunt-htmlhint --save-dev
@@ -120,6 +120,6 @@ htmlhint: {
 
 Project initially created by [@yaniswang](https://github.com/yaniswang) and transferred to the [HTMLHint](https://github.com/htmlhint) organization.
 
-<a href="https://htmlhint.io"><img src="https://raw.githubusercontent.com/htmlhint/htmlhint/develop/src/img/htmlhint.png" alt="Logo HTMLHint" width="65"></a>
+<a href="https://htmlhint.com"><img src="https://raw.githubusercontent.com/htmlhint/htmlhint/develop/src/img/htmlhint.png" alt="Logo HTMLHint" width="65"></a>
 
 [MIT License](./LICENSE)