update root folder links (yiisoft#76)

Author: Arhell

.github/CONTRIBUTING.md

@@ -3,5 +3,5 @@ Contributing to Yii2
 
 - [Report an issue](https://github.com/yiisoft/yii2/blob/master/docs/internals/report-an-issue.md)
 - [Translate documentation or messages](https://github.com/yiisoft/yii2/blob/master/docs/internals/translation-workflow.md)
-- [Give us feedback or start a design discussion](http://www.yiiframework.com/forum/index.php/forum/42-general-discussions-for-yii-20/)
+- [Give us feedback or start a design discussion](https://www.yiiframework.com/forum/index.php/forum/42-general-discussions-for-yii-20/)
 - [Contribute to the core code or fix bugs](https://github.com/yiisoft/yii2/blob/master/docs/internals/git-workflow.md)

README.md

@@ -6,7 +6,7 @@
     <br>
 </p>
 
-This extension provides a [Symfony Mailer](https://symfony.com/doc/5.4/mailer.html) mail solution for [Yii framework 2.0](http://www.yiiframework.com).
+This extension provides a [Symfony Mailer](https://symfony.com/doc/5.4/mailer.html) mail solution for [Yii framework 2.0](https://www.yiiframework.com).
 
 For license information check the [LICENSE](LICENSE.md)-file.
 
@@ -25,7 +25,7 @@ Requirements
 Installation
 ------------
 
-The preferred way to install this extension is through [composer](http://getcomposer.org/download/).
+The preferred way to install this extension is through [composer](https://getcomposer.org/download/).
 
 Either run
 

composer.json

@@ -13,8 +13,8 @@
     "license": "BSD-3-Clause",
     "support": {
         "issues": "https://github.com/yiisoft/yii2-symfonymailer/issues",
-        "forum": "http://www.yiiframework.com/forum/",
-        "wiki": "http://www.yiiframework.com/wiki/",
+        "forum": "https://www.yiiframework.com/forum/",
+        "wiki": "https://www.yiiframework.com/wiki/",
         "irc": "ircs://irc.libera.chat:6697/yii",
         "source": "https://github.com/yiisoft/yii2-symfonymailer"
     },