Fix changelog

[skip ci]

Author: scambra

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## 2.0.6
 - Fix submit form failure with turbolinks, fixes ([#865](https://github.com/scambra/devise_invitable/issues/865))
 - Fix obsolete symbols in German translation ([#864](https://github.com/scambra/devise_invitable/pull/864))
+- Allow to provide validate option to the instance method "invite", default to follow the setting validate_on_invite
 
 ## 2.0.5
 - Fix NoMethodError in random_password when validatable is not used ([#850](https://github.com/scambra/devise_invitable/pull/850))