Add Helix (#201)

* add helix

* fix url

Author: dev-nicolaos

index.html

@@ -153,6 +153,7 @@ <h2>No Plugin Necessary</h2>
     <li><a href="https://docs.gitlab.com/ee/user/project/web_ide/index.html#configure-the-web-ide"><img src="logos/gitlab.png" alt="GitLab" title="GitLab"><span>GitLab</span></a></li>
     <li><a href="https://gitbucket.github.io/"><img src="logos/gitbucket.png" alt="GitBucket"><span>GitBucket</span></a></li>
     <li><a href="https://gogs.io"><img src="logos/gogs.png" alt="Gogs"><span>Gogs</span></a></li>
+    <li><a href="https://helix-editor.com/"><img src="logos/helix.png" alt="Helix"><span>Helix</span></a></li>
     <li><a href="https://plugins.jetbrains.com/plugin/7294-editorconfig/"><img src="logos/intellijIDEA.png" alt="intelliJ logo"><span>intelliJ</span></a></li>
     <li><a href="https://gitlab.com/JakobDev/jdTextEdit"><img src="logos/jdTextEdit.png" alt="jdTextEdit logo"><span>jdTextEdit</span></a></li>
     <li><a href="https://api.kde.org/frameworks/ktexteditor/html/"><img src="logos/ktexteditor.png" alt="KTextEditor"><span>KTextEditor</span></a></li>