add Plone: volto form block

README.md

@@ -36,12 +36,13 @@ Instructions: run `npm install`, edit README.md, then run `./upd_toc.sh` to re-c
 - [Plugins](#plugins)
   * [CraftCMS](#craftcms)
   * [Drupal](#drupal)
-  * [Invision Community](#invision)
+  * [Invision Community](#invision-community)
   * [Joomla](#joomla)
     + [Joomla RSForm!Pro Plugin](#joomla-rsformpro-plugin)
   * [Magento](#magento)
   * [MediaWiki](#mediawiki)
   * [Plone](#plone)
+    + [Volto Form Block](#volto-form-block)
   * [SMF](#smf)
   * [Symfony](#symfony)
   * [Typo3](#typo3)
@@ -173,6 +174,9 @@ Starting from version 2.2: [Announcement](https://xenforo.com/community/posts/14
 
 [Plugin](https://github.com/plone/plone.formwidget.hcaptcha)
 
+#### Volto Form Block
+
+[Volto form add-on](https://github.com/collective/volto-form-block)
 
 ### SMF