Correction in doc according callbacks API changes.

Author: Tim-ats-d

doc/source/faq.rst

@@ -11,11 +11,9 @@ See the `dedicated example <https://github.com/Tim-ats-d/Visual-dialog/tree/main
 How can I continue to manage screen display while a DialogBox is writing text on the screen?
 --------------------------------------------------------------------------------------------
 
-``char_by_char`` and ``word_by_word`` methods of ``DialogBox`` class accept a callback in parameter.
-You can also pass arguments to this callback via ``cargs`` parameter.
-
-The past callback is executed after downtime delay between character or word display.
-You can use this behavior to perform multiple tasks while ``DialogBox`` scrolling.
+``char_by_char`` and ``word_by_word`` methods of ``DialogBox`` class accept a ``callbacks`` in parameter.
+It must be a function iterable.
+You can use this behavior to perform multiple tasks while text scrolling.
 
 I am not satisfied with the behavior of DialogBox, how can I change it?
 -----------------------------------------------------------------------

visualdialog/dialog.py

@@ -254,6 +254,11 @@ def char_by_char(self,
         :param callback: Iterable of callable called one by one after
             writing a character and the delay time has elapsed. This
             defaults to an empty tuple.
+            The arguments passed to the given callables are:
+                - the current instance (``self``).
+                - the character previously written.
+                - the index of the character previously written in the
+                  word being written.
 
         .. NOTE::
             Method flow:
@@ -352,6 +357,9 @@ def word_by_word(self,
         :param callback: Iterable of callable called one by one after
             writing a word and the delay time has elapsed. This defaults
             to an empty tuple.
+            The arguments passed to the given callables are:
+                - the current instance (``self``).
+                - the word previously written.
 
         .. NOTE::
             Method flow: