DOC-3190: Clarify author identification process in comments callback documentation.

Author: kemister85

modules/ROOT/pages/comments-callback-mode.adoc

@@ -15,10 +15,10 @@ All options accept functions incorporating `+done+` and `+fail+` callbacks as pa
 * The `+fail+` callback takes either a string or a JavaScript Error type.
 * The `+done+` callback takes an argument specific to each function.
 
-Most functions (create, reply, and edit) require an `+id+` identifying the *current author*.
+Most functions (create, reply, and edit) require an +id+ identifying the current author. This can be provided directly within the callbacks or dynamically via the `+tinycomments_fetch_author_info+` option.
 
 [NOTE]
-**Current author**: The {pluginname} plugin does not know the name of the current user. Determining the current user and storing the comment related to that user is required to be configured by the integrator.
+**Current author**: By default, the **Comments** plugin does not know the name of the current user. To display the correct author information when creating a new conversation, integrators can now use the `+tinycomments_fetch_author_info+` option to supply author details dynamically through a callback.
 
 During the initial editor load, the {pluginname} uses `+tinycomments_fetch+` callback to retrieve the existing conversations in the document. If not configured, the {pluginname} will fallback to `+tinycomments_lookup+`.