Issue #2688813 by sidharthap: Documentation for FieldPluginBase::addSelfTokens is missing "__"

core/modules/views/src/Plugin/views/field/FieldPluginBase.php

@@ -1680,8 +1680,7 @@ protected function getTokenValuesRecursive(array $array, array $parent_keys = ar
    * fields as a list. For example, the field that displays all terms
    * on a node might have tokens for the tid and the term.
    *
-   * By convention, tokens should follow the format of {{ token
-   * subtoken }}
+   * By convention, tokens should follow the format of {{ token__subtoken }}
    * where token is the field ID and subtoken is the field. If the
    * field ID is terms, then the tokens might be {{ terms__tid }} and
    * {{ terms__name }}.